Frost dates by state
Illinois Frost Dates
Across Illinois's 1,292 cities and towns, the average last spring frost runs from April 1 in Venice to May 2 in Savanna. Average last frost elsewhere: Chicago Apr 10, Springfield Apr 15 and Carbondale Apr 9.
Frost dates for every city and town in Illinois
Dates are for 32°F at the NOAA station nearest the ZIP code at each Illinois town's center. "Safer date" is when only 1 year in 10 still gets a frost, a good target for tomatoes and peppers.
| City | Average last frost | Safer date | Average first frost | Frost-free days |
|---|---|---|---|---|
| Abingdon | Apr 21 | May 6 | Oct 20 | 182 |
| Addieville | Apr 7 | Apr 22 | Oct 26 | 202 |
| Addison | Apr 16 | May 1 | Oct 28 | 195 |
| Adeline | Apr 26 | May 11 | Oct 13 | 170 |
| Albany | Apr 22 | May 8 | Oct 16 | 177 |
| Albers | Apr 12 | Apr 28 | Oct 20 | 191 |
| Albion | Apr 4 | Apr 20 | Oct 28 | 207 |
| Aledo | Apr 22 | May 6 | Oct 19 | 180 |
| Alexis | Apr 22 | May 10 | Oct 15 | 176 |
| Algonquin | Apr 26 | May 12 | Oct 18 | 175 |
| Alhambra | Apr 4 | Apr 19 | Nov 5 | 215 |
| Allendale | Apr 2 | Apr 17 | Oct 31 | 212 |
| Allenville | Apr 15 | Apr 30 | Oct 22 | 190 |
| Allerton | Apr 19 | May 3 | Oct 19 | 183 |
| Alma | Apr 9 | Apr 23 | Oct 26 | 200 |
| Alpha | Apr 28 | May 12 | Oct 12 | 167 |
| Alsey | Apr 18 | May 5 | Oct 20 | 185 |
| Alsip | Apr 10 | Apr 26 | Nov 1 | 205 |
| Altamont | Apr 13 | Apr 29 | Oct 24 | 194 |
| Alto Pass | Apr 8 | Apr 26 | Oct 29 | 204 |
| Alton | Apr 4 | Apr 19 | Nov 5 | 215 |
| Altona | Apr 28 | May 12 | Oct 12 | 167 |
| Alvan (Alvin) | Apr 21 | May 7 | Oct 20 | 182 |
| Amboy | Apr 21 | May 5 | Oct 19 | 181 |
| Anchor | Apr 21 | May 5 | Oct 17 | 179 |
| Andalusia | Apr 19 | May 4 | Oct 22 | 186 |
| Andover | Apr 28 | May 12 | Oct 12 | 167 |
| Anna | Apr 8 | Apr 26 | Oct 29 | 204 |
| Annawan | Apr 24 | May 8 | Oct 17 | 176 |
| Antioch | Apr 23 | May 9 | Oct 21 | 181 |
| Apple River | Apr 27 | May 12 | Oct 9 | 165 |
| Arcola | Apr 15 | May 1 | Oct 20 | 188 |
| Arenzville | Apr 19 | May 5 | Oct 17 | 181 |
| Argenta | Apr 16 | Apr 30 | Oct 22 | 189 |
| Arlington | Apr 24 | May 8 | Oct 18 | 177 |
| Arlington Heights | Apr 19 | May 3 | Oct 26 | 190 |
| Armington | Apr 20 | May 4 | Oct 16 | 179 |
| Aroma Park | Apr 19 | May 3 | Oct 24 | 188 |
| Arrowsmith | Apr 21 | May 5 | Oct 17 | 179 |
| Arthur | Apr 15 | May 1 | Oct 20 | 188 |
| Ashkum | Apr 24 | May 10 | Oct 16 | 175 |
| Ashland | Apr 19 | May 5 | Oct 17 | 181 |
| Ashley | Apr 7 | Apr 22 | Oct 26 | 202 |
| Ashmore | Apr 15 | May 3 | Oct 23 | 191 |
| Ashton | Apr 26 | May 12 | Oct 13 | 170 |
| Assumption | Apr 17 | May 3 | Oct 23 | 189 |
| Astoria | Apr 17 | May 3 | Oct 19 | 185 |
| Athens | Apr 19 | May 4 | Oct 19 | 183 |
| Atkinson | Apr 20 | May 6 | Oct 20 | 183 |
| Atlanta | Apr 20 | May 4 | Oct 16 | 179 |
| Atwood | Apr 15 | May 1 | Oct 20 | 188 |
| Auburn | Apr 7 | Apr 21 | Oct 29 | 205 |
| Augusta | Apr 18 | May 1 | Oct 21 | 186 |
| Aurora | Apr 19 | May 4 | Oct 23 | 187 |
| Ava | Apr 9 | Apr 25 | Oct 22 | 196 |
| Aviston | Apr 6 | Apr 22 | Oct 29 | 206 |
| Avon | Apr 22 | May 8 | Oct 19 | 180 |
| Baldwin | Apr 12 | Apr 29 | Oct 22 | 193 |
| Banner | Apr 17 | May 3 | Oct 19 | 185 |
| Bannockburn | Apr 19 | May 3 | Oct 26 | 190 |
| Bardolph | Apr 17 | May 2 | Oct 22 | 188 |
| Barrington | Apr 25 | May 12 | Oct 19 | 177 |
| Barrington Hills | Apr 25 | May 12 | Oct 19 | 177 |
| Barry | Apr 18 | May 5 | Oct 15 | 180 |
| Bartelso | Apr 6 | Apr 22 | Oct 29 | 206 |
| Bartlett | Apr 30 | May 16 | Oct 13 | 166 |
| Bartonville | Apr 16 | May 4 | Oct 23 | 190 |
| Basco | Apr 13 | Apr 30 | Oct 22 | 192 |
| Batavia | Apr 19 | May 4 | Oct 23 | 187 |
| Batchtown | Apr 20 | May 5 | Oct 20 | 183 |
| Bath | Apr 17 | May 3 | Oct 19 | 185 |
| Bay View Gardens | Apr 16 | May 4 | Oct 23 | 190 |
| Baylis | Apr 18 | May 5 | Oct 15 | 180 |
| Beach Park | Apr 30 | May 16 | Oct 21 | 174 |
| Beardstown | Apr 16 | May 3 | Oct 23 | 190 |
| Beaverville | Apr 24 | May 10 | Oct 16 | 175 |
| Beckemeyer | Apr 6 | Apr 22 | Oct 29 | 206 |
| Bedford Park | Apr 11 | Apr 27 | Oct 31 | 203 |
| Beecher | Apr 23 | May 11 | Oct 20 | 180 |
| Beecher City | Apr 13 | Apr 29 | Oct 24 | 194 |
| Belgium | Apr 21 | May 7 | Oct 20 | 182 |
| Belknap | Apr 3 | Apr 21 | Nov 5 | 216 |
| Belle Prairie City | Apr 11 | Apr 26 | Oct 21 | 193 |
| Belle Rive | Apr 11 | Apr 26 | Oct 22 | 194 |
| Belleville | Apr 12 | Apr 28 | Oct 20 | 191 |
| Bellevue | Apr 16 | May 4 | Oct 23 | 190 |
| Bellflower | Apr 21 | May 5 | Oct 17 | 179 |
| Bellmont | Apr 4 | Apr 20 | Oct 28 | 207 |
| Bellwood | Apr 16 | May 1 | Oct 28 | 195 |
| Belvidere | Apr 28 | May 14 | Oct 12 | 167 |
| Bement | Apr 23 | May 9 | Oct 13 | 173 |
| Benld | Apr 14 | Apr 30 | Oct 21 | 190 |
| Bensenville | Apr 16 | May 1 | Oct 28 | 195 |
| Benson | Apr 26 | May 10 | Oct 17 | 174 |
| Bentley | Apr 13 | Apr 30 | Oct 22 | 192 |
| Benton | Apr 4 | Apr 21 | Oct 28 | 207 |
| Berkeley | Apr 16 | May 1 | Oct 28 | 195 |
| Berlin | Apr 15 | Apr 30 | Oct 22 | 190 |
| Berwyn | Apr 11 | Apr 27 | Oct 31 | 203 |
| Bethalto | Apr 4 | Apr 19 | Nov 5 | 215 |
| Bethany | Apr 15 | Apr 30 | Oct 22 | 190 |
| Big Rock | Apr 28 | May 11 | Oct 13 | 168 |
| Biggsville | Apr 8 | Apr 23 | Oct 29 | 204 |
| Bingham | Apr 15 | May 1 | Oct 19 | 187 |
| Bishop Hill | Apr 26 | May 11 | Oct 12 | 169 |
| Bismarck | Apr 21 | May 7 | Oct 20 | 182 |
| Blandinsville | Apr 21 | May 5 | Oct 19 | 181 |
| Bloomingdale | Apr 30 | May 16 | Oct 13 | 166 |
| Bloomington | Apr 21 | May 5 | Oct 20 | 182 |
| Blue Island | Apr 10 | Apr 26 | Nov 1 | 205 |
| Blue Mound | Apr 14 | May 1 | Oct 24 | 193 |
| Bluffs | Apr 18 | May 5 | Oct 20 | 185 |
| Bluford | Apr 11 | Apr 26 | Oct 22 | 194 |
| Bolingbrook | Apr 20 | May 6 | Oct 22 | 185 |
| Bondville | Apr 23 | May 9 | Oct 13 | 173 |
| Bone Gap | Apr 4 | Apr 20 | Oct 28 | 207 |
| Bonfield | Apr 19 | May 3 | Oct 24 | 188 |
| Bonnie | Apr 4 | Apr 21 | Oct 28 | 207 |
| Bourbonnais | Apr 19 | May 3 | Oct 24 | 188 |
| Bowen | Apr 13 | Apr 30 | Oct 22 | 192 |
| Braceville | Apr 16 | May 3 | Oct 26 | 193 |
| Bradford | Apr 24 | May 8 | Oct 17 | 176 |
| Bradley | Apr 19 | May 3 | Oct 24 | 188 |
| Braidwood | Apr 16 | May 3 | Oct 26 | 193 |
| Breese | Apr 6 | Apr 22 | Oct 29 | 206 |
| Bridgeport | Apr 12 | Apr 30 | Oct 25 | 196 |
| Bridgeview | Apr 10 | Apr 26 | Nov 1 | 205 |
| Brighton | Apr 14 | Apr 30 | Oct 19 | 188 |
| Brimfield | Apr 22 | May 6 | Oct 14 | 175 |
| Broadlands | Apr 19 | May 3 | Oct 19 | 183 |
| Broadview | Apr 11 | Apr 27 | Oct 31 | 203 |
| Broadwell | Apr 20 | May 4 | Oct 16 | 179 |
| Brocton | Apr 21 | May 9 | Oct 20 | 182 |
| Brookfield | Apr 11 | Apr 27 | Oct 31 | 203 |
| Brooklyn | Apr 8 | Apr 23 | Oct 26 | 201 |
| Brookport | Apr 3 | Apr 21 | Oct 30 | 210 |
| Broughton | Apr 11 | Apr 26 | Oct 21 | 193 |
| Browning | Apr 16 | May 3 | Oct 23 | 190 |
| Browns | Apr 4 | Apr 20 | Oct 28 | 207 |
| Brownstown | Apr 3 | Apr 25 | Oct 24 | 204 |
| Brussels | Apr 5 | Apr 21 | Oct 27 | 205 |
| Bryant | Apr 17 | May 3 | Oct 19 | 185 |
| Buckingham | Apr 27 | May 14 | Oct 15 | 171 |
| Buckley | Apr 23 | May 9 | Oct 12 | 172 |
| Buckner | Apr 4 | Apr 19 | Oct 27 | 206 |
| Buda | Apr 24 | May 8 | Oct 17 | 176 |
| Buffalo | Apr 14 | Apr 29 | Oct 20 | 189 |
| Buffalo Grove | Apr 19 | May 3 | Oct 26 | 190 |
| Bull Valley | May 1 | May 19 | Oct 11 | 163 |
| Bulpitt | Apr 12 | Apr 27 | Oct 20 | 191 |
| Buncombe | Apr 8 | Apr 26 | Oct 29 | 204 |
| Bunker Hill | Apr 4 | Apr 19 | Nov 5 | 215 |
| Burbank | Apr 10 | Apr 26 | Nov 1 | 205 |
| Bureau Junction | Apr 24 | May 10 | Oct 17 | 176 |
| Burlington | Apr 26 | May 12 | Oct 18 | 175 |
| Burnham | Apr 23 | May 11 | Oct 20 | 180 |
| Burnt Prairie | Apr 7 | Apr 23 | Oct 26 | 202 |
| Burr Ridge | Apr 19 | May 5 | Oct 22 | 186 |
| Bush | Apr 9 | Apr 25 | Oct 22 | 196 |
| Bushnell | Apr 17 | May 2 | Oct 22 | 188 |
| Butler | Apr 13 | Apr 28 | Oct 24 | 194 |
| Byron | Apr 24 | May 8 | Oct 17 | 176 |
| Cabery | Apr 27 | May 14 | Oct 15 | 171 |
| Cahokia Heights | Apr 8 | Apr 23 | Oct 26 | 201 |
| Cairo | Apr 2 | Apr 17 | Oct 31 | 212 |
| Caledonia | May 1 | May 16 | Oct 12 | 164 |
| Calhoun | Apr 15 | May 3 | Oct 23 | 191 |
| Calumet City | Apr 23 | May 11 | Oct 20 | 180 |
| Calumet Park | Apr 10 | Apr 26 | Nov 1 | 205 |
| Camargo | Apr 15 | May 1 | Oct 20 | 188 |
| Cambria | Apr 9 | Apr 25 | Oct 22 | 196 |
| Cambridge | Apr 26 | May 11 | Oct 12 | 169 |
| Camden | Apr 16 | May 3 | Oct 23 | 190 |
| Camp Point | Apr 18 | May 1 | Oct 21 | 186 |
| Campbell Hill | Apr 12 | Apr 29 | Oct 22 | 193 |
| Campton Hills | Apr 25 | May 12 | Oct 19 | 177 |
| Campus | Apr 27 | May 14 | Oct 15 | 171 |
| Canton | Apr 17 | May 3 | Oct 19 | 185 |
| Cantrall | Apr 14 | Apr 29 | Oct 20 | 189 |
| Capron | Apr 30 | May 17 | Oct 10 | 163 |
| Carbon Cliff | Apr 16 | Apr 30 | Oct 25 | 192 |
| Carbon Hill | Apr 16 | May 3 | Oct 26 | 193 |
| Carbondale | Apr 9 | Apr 25 | Oct 22 | 196 |
| Carlinville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Carlock | Apr 21 | May 7 | Oct 17 | 179 |
| Carlyle | Apr 6 | Apr 22 | Oct 29 | 206 |
| Carmi | Apr 15 | May 2 | Oct 19 | 187 |
| Carol Stream | Apr 25 | May 12 | Oct 19 | 177 |
| Carpentersville | Apr 26 | May 12 | Oct 18 | 175 |
| Carrier Mills | Apr 7 | Apr 25 | Oct 26 | 202 |
| Carrollton | Apr 13 | Apr 28 | Oct 22 | 192 |
| Carterville | Apr 9 | Apr 25 | Oct 22 | 196 |
| Carthage | Apr 13 | Apr 30 | Oct 22 | 192 |
| Cary | May 1 | May 19 | Oct 11 | 163 |
| Casey | Apr 14 | Apr 30 | Oct 20 | 189 |
| Caseyville | Apr 8 | Apr 23 | Oct 26 | 201 |
| Catlin | Apr 19 | May 3 | Oct 19 | 183 |
| Cave-In-Rock | Apr 19 | May 8 | Oct 20 | 184 |
| Cedar Point | Apr 24 | May 8 | Oct 18 | 177 |
| Cedarville | Apr 26 | May 11 | Oct 13 | 170 |
| Central City | Apr 9 | Apr 25 | Oct 24 | 198 |
| Centralia | Apr 9 | Apr 25 | Oct 24 | 198 |
| Cerro Gordo | Apr 16 | Apr 30 | Oct 22 | 189 |
| Chadwick | May 2 | May 18 | Oct 7 | 158 |
| Champaign | Apr 15 | Apr 29 | Oct 24 | 192 |
| Chandlerville | Apr 13 | Apr 28 | Oct 21 | 191 |
| Channahon | Apr 16 | May 3 | Oct 26 | 193 |
| Chapin | Apr 18 | May 5 | Oct 20 | 185 |
| Charleston | Apr 15 | May 3 | Oct 23 | 191 |
| Chatham | Apr 15 | Apr 30 | Oct 22 | 190 |
| Chatsworth | Apr 25 | May 10 | Oct 20 | 178 |
| Chebanse | Apr 19 | May 3 | Oct 24 | 188 |
| Chenoa | Apr 23 | May 7 | Oct 15 | 175 |
| Cherry | Apr 24 | May 8 | Oct 18 | 177 |
| Cherry Valley | Apr 24 | May 8 | Oct 17 | 176 |
| Chester | Apr 8 | Apr 25 | Oct 30 | 205 |
| Chesterfield | Apr 14 | Apr 30 | Oct 21 | 190 |
| Chicago | Apr 10 | Apr 25 | Nov 5 | 209 |
| Chicago Heights | Apr 23 | May 11 | Oct 20 | 180 |
| Chicago Ridge | Apr 10 | Apr 26 | Nov 1 | 205 |
| Chillicothe | Apr 20 | May 7 | Oct 17 | 180 |
| Chrisman | Apr 21 | May 9 | Oct 20 | 182 |
| Christopher | Apr 4 | Apr 19 | Oct 27 | 206 |
| Cicero | Apr 11 | Apr 27 | Oct 31 | 203 |
| Cisco | Apr 16 | Apr 30 | Oct 22 | 189 |
| Cisne | Apr 9 | Apr 23 | Oct 24 | 198 |
| Cissna Park | Apr 22 | May 8 | Oct 19 | 180 |
| Claremont | Apr 15 | May 3 | Oct 23 | 191 |
| Clarendon Hills | Apr 28 | May 14 | Oct 16 | 171 |
| Clay City | Apr 9 | Apr 23 | Oct 24 | 198 |
| Clayton | Apr 18 | May 1 | Oct 21 | 186 |
| Cleveland | Apr 16 | Apr 30 | Oct 25 | 192 |
| Clifton | Apr 19 | May 3 | Oct 24 | 188 |
| Clinton | Apr 20 | May 4 | Oct 16 | 179 |
| Coal City | Apr 16 | May 3 | Oct 26 | 193 |
| Coal Valley | Apr 24 | May 9 | Oct 18 | 177 |
| Coalton | Apr 12 | Apr 27 | Oct 20 | 191 |
| Coatsburg | Apr 14 | May 1 | Oct 23 | 192 |
| Cobden | Apr 8 | Apr 26 | Oct 29 | 204 |
| Coffeen | Apr 13 | Apr 28 | Oct 24 | 194 |
| Colchester | Apr 21 | May 5 | Oct 19 | 181 |
| Coleta | Apr 21 | May 5 | Oct 19 | 181 |
| Colfax | Apr 23 | May 7 | Oct 15 | 175 |
| Collinsville | Apr 8 | Apr 23 | Oct 26 | 201 |
| Colona | Apr 16 | Apr 30 | Oct 25 | 192 |
| Colp | Apr 9 | Apr 25 | Oct 22 | 196 |
| Columbia | Apr 6 | Apr 20 | Oct 27 | 204 |
| Columbus | Apr 14 | May 1 | Oct 23 | 192 |
| Compton | Apr 27 | May 14 | Oct 12 | 168 |
| Concord | Apr 17 | May 1 | Oct 21 | 187 |
| Congerville | Apr 21 | May 7 | Oct 17 | 179 |
| Cooksville | Apr 25 | May 11 | Oct 16 | 174 |
| Cordova | Apr 22 | May 8 | Oct 16 | 177 |
| Cornell | Apr 12 | Apr 25 | Oct 28 | 199 |
| Cortland | Apr 24 | May 10 | Oct 18 | 177 |
| Coulterville | Apr 12 | Apr 29 | Oct 22 | 193 |
| Country Club Hills | Apr 23 | May 11 | Oct 20 | 180 |
| Countryside | Apr 19 | May 5 | Oct 22 | 186 |
| Cowden | Apr 10 | Apr 28 | Oct 24 | 197 |
| Crainville | Apr 9 | Apr 25 | Oct 22 | 196 |
| Creal Springs | Apr 14 | Apr 30 | Oct 21 | 190 |
| Crescent City | Apr 24 | May 10 | Oct 16 | 175 |
| Crest Hill | Apr 19 | May 7 | Oct 25 | 189 |
| Creston | Apr 26 | May 12 | Oct 13 | 170 |
| Crestwood | Apr 10 | Apr 26 | Nov 1 | 205 |
| Crete | Apr 23 | May 11 | Oct 20 | 180 |
| Creve Coeur | Apr 16 | May 4 | Oct 23 | 190 |
| Crossville | Apr 7 | Apr 23 | Oct 25 | 201 |
| Crystal Lake | Apr 25 | May 9 | Oct 22 | 180 |
| Cuba | Apr 17 | May 3 | Oct 19 | 185 |
| Cullom | Apr 25 | May 10 | Oct 20 | 178 |
| Curran | Apr 15 | Apr 30 | Oct 22 | 190 |
| Cutler | Apr 12 | Apr 29 | Oct 22 | 193 |
| Cypress | Apr 3 | Apr 21 | Nov 5 | 216 |
| Dahlgren | Apr 11 | Apr 26 | Oct 22 | 194 |
| Dakota | Apr 26 | May 11 | Oct 13 | 170 |
| Dallas City | Apr 21 | May 5 | Oct 19 | 181 |
| Dalton City | Apr 16 | Apr 30 | Oct 22 | 189 |
| Dalzell | Apr 24 | May 8 | Oct 18 | 177 |
| Damiansville | Apr 12 | Apr 28 | Oct 20 | 191 |
| Dana | Apr 26 | May 10 | Oct 17 | 174 |
| Danforth | Apr 25 | May 10 | Oct 20 | 178 |
| Danvers | Apr 21 | May 7 | Oct 17 | 179 |
| Danville | Apr 21 | May 7 | Oct 20 | 182 |
| Darien | Apr 19 | May 5 | Oct 22 | 186 |
| Davis | Apr 29 | May 14 | Oct 12 | 166 |
| Davis Junction | Apr 24 | May 8 | Oct 17 | 176 |
| Dawson | Apr 14 | Apr 29 | Oct 20 | 189 |
| De Land | Apr 23 | May 9 | Oct 13 | 173 |
| De Pue | Apr 24 | May 10 | Oct 17 | 176 |
| De Soto | Apr 9 | Apr 25 | Oct 22 | 196 |
| De Witt | Apr 21 | May 5 | Oct 20 | 182 |
| Decatur | Apr 14 | May 1 | Oct 24 | 193 |
| Deer Creek | Apr 21 | May 7 | Oct 17 | 179 |
| Deer Grove | Apr 24 | May 9 | Oct 14 | 173 |
| Deer Park | Apr 29 | May 15 | Oct 20 | 174 |
| Deerfield | Apr 19 | May 3 | Oct 26 | 190 |
| DeKalb | Apr 24 | May 10 | Oct 18 | 177 |
| Delavan | Apr 17 | May 4 | Oct 18 | 184 |
| Des Plaines | Apr 16 | May 1 | Oct 28 | 195 |
| Detroit | Apr 14 | Apr 30 | Oct 21 | 190 |
| Diamond | Apr 16 | May 3 | Oct 26 | 193 |
| Dieterich | Apr 13 | Apr 29 | Oct 22 | 192 |
| Divernon | Apr 7 | Apr 21 | Oct 29 | 205 |
| Dix | Apr 9 | Apr 25 | Oct 24 | 198 |
| Dixmoor | Apr 10 | Apr 26 | Nov 1 | 205 |
| Dixon | Apr 21 | May 5 | Oct 19 | 181 |
| Dolton | Apr 23 | May 11 | Oct 20 | 180 |
| Dongola | Apr 8 | Apr 26 | Oct 29 | 204 |
| Donnellson | Apr 13 | Apr 28 | Oct 24 | 194 |
| Donovan | Apr 24 | May 10 | Oct 16 | 175 |
| Dorchester | Apr 14 | Apr 30 | Oct 21 | 190 |
| Dover | Apr 22 | May 7 | Oct 17 | 178 |
| Dowell | Apr 6 | Apr 22 | Oct 22 | 199 |
| Downers Grove | Apr 28 | May 14 | Oct 16 | 171 |
| Downs | Apr 25 | May 11 | Oct 16 | 174 |
| Du Bois | Apr 7 | Apr 22 | Oct 26 | 202 |
| Du Quoin | Apr 6 | Apr 22 | Oct 22 | 199 |
| Dunfermline | Apr 17 | May 3 | Oct 19 | 185 |
| Dunlap | Apr 22 | May 6 | Oct 14 | 175 |
| Dupo | Apr 6 | Apr 20 | Oct 27 | 204 |
| Durand | Apr 29 | May 14 | Oct 12 | 166 |
| Dwight | Apr 27 | May 14 | Oct 15 | 171 |
| Eagarville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Earlville | Apr 27 | May 12 | Oct 15 | 171 |
| East Alton | Apr 4 | Apr 19 | Nov 5 | 215 |
| East Brooklyn | Apr 27 | May 14 | Oct 15 | 171 |
| East Cape Girardeau | Apr 5 | Apr 21 | Oct 25 | 203 |
| East Carondelet | Apr 6 | Apr 20 | Oct 27 | 204 |
| East Dubuque | Apr 19 | May 4 | Oct 21 | 185 |
| East Dundee | Apr 26 | May 12 | Oct 18 | 175 |
| East Galesburg | Apr 21 | May 6 | Oct 20 | 182 |
| East Gillespie | Apr 14 | Apr 30 | Oct 21 | 190 |
| East Hazel Crest | Apr 23 | May 11 | Oct 20 | 180 |
| East Moline | Apr 16 | Apr 30 | Oct 25 | 192 |
| East Peoria | Apr 16 | May 4 | Oct 23 | 190 |
| East St. Louis | Apr 8 | Apr 23 | Oct 26 | 201 |
| Easton | Apr 17 | May 3 | Oct 19 | 185 |
| Eddyville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Edgewood | Apr 10 | Apr 26 | Oct 23 | 196 |
| Edinburg | Apr 15 | Apr 30 | Oct 22 | 190 |
| Edwardsville | Apr 4 | Apr 19 | Nov 5 | 215 |
| Effingham | Apr 13 | Apr 29 | Oct 24 | 194 |
| El Dara | Apr 4 | Apr 19 | Nov 4 | 214 |
| El Paso | Apr 26 | May 10 | Oct 17 | 174 |
| Elburn | Apr 28 | May 11 | Oct 13 | 168 |
| Eldorado | Apr 7 | Apr 25 | Oct 26 | 202 |
| Eldred | Apr 20 | May 5 | Oct 20 | 183 |
| Elgin | Apr 26 | May 12 | Oct 18 | 175 |
| Elizabeth | May 1 | May 17 | Oct 9 | 161 |
| Elizabethtown | Apr 19 | May 8 | Oct 20 | 184 |
| Elk Grove Village | Apr 16 | May 1 | Oct 28 | 195 |
| Elkhart | Apr 20 | May 4 | Oct 16 | 179 |
| Elkville | Apr 6 | Apr 22 | Oct 22 | 199 |
| Elliott | Apr 21 | May 5 | Oct 17 | 179 |
| Ellis Grove | Apr 8 | Apr 25 | Oct 30 | 205 |
| Ellisville | Apr 22 | May 8 | Oct 19 | 180 |
| Ellsworth | Apr 25 | May 11 | Oct 16 | 174 |
| Elmhurst | Apr 16 | May 1 | Oct 28 | 195 |
| Elmwood | Apr 22 | May 6 | Oct 14 | 175 |
| Elmwood Park | Apr 16 | May 1 | Oct 28 | 195 |
| Elsah | Apr 5 | Apr 21 | Oct 27 | 205 |
| Elvaston | Apr 13 | Apr 30 | Oct 22 | 192 |
| Elwood | Apr 19 | May 7 | Oct 25 | 189 |
| Emden | Apr 20 | May 4 | Oct 16 | 179 |
| Emington | Apr 27 | May 14 | Oct 15 | 171 |
| Energy | Apr 9 | Apr 25 | Oct 22 | 196 |
| Enfield | Apr 15 | May 2 | Oct 19 | 187 |
| Equality | Apr 7 | Apr 25 | Oct 26 | 202 |
| Erie | Apr 26 | May 11 | Oct 13 | 170 |
| Essex | Apr 27 | May 14 | Oct 15 | 171 |
| Eureka | Apr 21 | May 7 | Oct 17 | 179 |
| Evanston | Apr 26 | May 11 | Oct 21 | 178 |
| Evansville | Apr 8 | Apr 25 | Oct 30 | 205 |
| Evergreen Park | Apr 10 | Apr 26 | Nov 1 | 205 |
| Ewing | Apr 4 | Apr 21 | Oct 28 | 207 |
| Exeter | Apr 18 | May 5 | Oct 20 | 185 |
| Fairbury | Apr 23 | May 7 | Oct 15 | 175 |
| Fairfield | Apr 7 | Apr 23 | Oct 26 | 202 |
| Fairmont City | Apr 8 | Apr 23 | Oct 26 | 201 |
| Fairmount | Apr 19 | May 3 | Oct 19 | 183 |
| Fairview | Apr 22 | May 8 | Oct 19 | 180 |
| Fairview Heights | Apr 8 | Apr 23 | Oct 26 | 201 |
| Farina | Apr 9 | Apr 23 | Oct 26 | 200 |
| Farmer City | Apr 23 | May 9 | Oct 13 | 173 |
| Farmersville | Apr 12 | Apr 27 | Oct 20 | 191 |
| Farmington | Apr 16 | May 4 | Oct 23 | 190 |
| Fayetteville | Apr 12 | Apr 28 | Oct 20 | 191 |
| Ferris | Apr 13 | Apr 30 | Oct 22 | 192 |
| Fidelity | Apr 14 | Apr 30 | Oct 19 | 188 |
| Fieldon | Apr 14 | Apr 30 | Oct 19 | 188 |
| Fillmore | Apr 15 | May 1 | Oct 19 | 187 |
| Findlay | Apr 10 | Apr 28 | Oct 24 | 197 |
| Fisher | Apr 21 | May 5 | Oct 17 | 179 |
| Fithian | Apr 20 | May 7 | Oct 21 | 184 |
| Flanagan | Apr 26 | May 10 | Oct 17 | 174 |
| Flat Rock | Apr 8 | Apr 22 | Oct 26 | 201 |
| Flora | Apr 9 | Apr 23 | Oct 24 | 198 |
| Florence | Apr 14 | Apr 30 | Oct 21 | 190 |
| Flossmoor | Apr 23 | May 11 | Oct 20 | 180 |
| Foosland | Apr 21 | May 5 | Oct 17 | 179 |
| Ford Heights | Apr 23 | May 11 | Oct 20 | 180 |
| Forest City | Apr 17 | May 3 | Oct 19 | 185 |
| Forest Park | Apr 11 | Apr 27 | Oct 31 | 203 |
| Forest View | Apr 11 | Apr 27 | Oct 31 | 203 |
| Forrest | Apr 25 | May 10 | Oct 20 | 178 |
| Forreston | Apr 29 | May 14 | Oct 7 | 161 |
| Forsyth | Apr 14 | May 1 | Oct 24 | 193 |
| Fox Lake | Apr 23 | May 9 | Oct 21 | 181 |
| Fox River Grove | Apr 25 | May 12 | Oct 19 | 177 |
| Frankfort | Apr 20 | May 6 | Oct 22 | 185 |
| Franklin | Apr 17 | May 1 | Oct 21 | 187 |
| Franklin Grove | Apr 21 | May 5 | Oct 19 | 181 |
| Franklin Park | Apr 16 | May 1 | Oct 28 | 195 |
| Freeburg | Apr 12 | Apr 28 | Oct 20 | 191 |
| Freeman Spur | Apr 4 | Apr 19 | Oct 27 | 206 |
| Freeport | Apr 26 | May 11 | Oct 13 | 170 |
| Fulton | Apr 13 | Apr 28 | Oct 26 | 196 |
| Fults | Apr 9 | Apr 25 | Oct 26 | 200 |
| Galatia | Apr 7 | Apr 25 | Oct 26 | 202 |
| Galena | Apr 26 | May 11 | Oct 15 | 172 |
| Galesburg | Apr 20 | May 5 | Oct 19 | 182 |
| Galva | Apr 26 | May 11 | Oct 12 | 169 |
| Gardner | Apr 27 | May 14 | Oct 15 | 171 |
| Garrett | Apr 15 | May 1 | Oct 20 | 188 |
| Gays | Apr 16 | Apr 30 | Oct 22 | 189 |
| Geneseo | Apr 20 | May 6 | Oct 20 | 183 |
| Geneva | Apr 25 | May 12 | Oct 19 | 177 |
| Genoa | Apr 28 | May 14 | Oct 12 | 167 |
| Georgetown | Apr 23 | May 7 | Oct 14 | 174 |
| German Valley | Apr 26 | May 11 | Oct 13 | 170 |
| Germantown | Apr 6 | Apr 22 | Oct 29 | 206 |
| Germantown Hills | Apr 20 | May 7 | Oct 17 | 180 |
| Gibson City | Apr 21 | May 5 | Oct 17 | 179 |
| Gifford | Apr 21 | May 6 | Oct 18 | 180 |
| Gilberts | Apr 26 | May 12 | Oct 18 | 175 |
| Gillespie | Apr 14 | Apr 30 | Oct 21 | 190 |
| Gilman | Apr 25 | May 10 | Oct 20 | 178 |
| Girard | Apr 7 | Apr 21 | Oct 29 | 205 |
| Gladstone | Apr 8 | Apr 23 | Oct 29 | 204 |
| Glasford | Apr 16 | May 4 | Oct 23 | 190 |
| Glasgow | Apr 18 | May 5 | Oct 20 | 185 |
| Glen Carbon | Apr 4 | Apr 19 | Nov 5 | 215 |
| Glen Ellyn | Apr 28 | May 14 | Oct 16 | 171 |
| Glencoe | Apr 26 | May 11 | Oct 21 | 178 |
| Glendale Heights | Apr 28 | May 14 | Oct 16 | 171 |
| Glenview | Apr 19 | May 3 | Oct 26 | 190 |
| Glenwood | Apr 23 | May 11 | Oct 20 | 180 |
| Godfrey | Apr 4 | Apr 19 | Nov 5 | 215 |
| Godley | Apr 16 | May 3 | Oct 26 | 193 |
| Golconda | Apr 14 | Apr 30 | Oct 21 | 190 |
| Golden | Apr 18 | May 1 | Oct 21 | 186 |
| Golden Gate | Apr 7 | Apr 23 | Oct 26 | 202 |
| Golf | Apr 26 | May 11 | Oct 21 | 178 |
| Good Hope | Apr 17 | May 2 | Oct 22 | 188 |
| Goodfield | Apr 21 | May 7 | Oct 17 | 179 |
| Goreville | Apr 8 | Apr 26 | Oct 29 | 204 |
| Gorham | Apr 9 | Apr 25 | Oct 22 | 196 |
| Grafton | Apr 5 | Apr 21 | Oct 27 | 205 |
| Grand Ridge | Apr 27 | May 13 | Oct 17 | 173 |
| Grand Tower | Apr 9 | Apr 25 | Oct 22 | 196 |
| Grandview | Apr 14 | Apr 29 | Oct 20 | 189 |
| Granite City | Apr 4 | Apr 19 | Nov 5 | 215 |
| Grant Park | Apr 29 | May 14 | Oct 16 | 170 |
| Grantfork | Apr 6 | Apr 22 | Oct 29 | 206 |
| Granville | Apr 24 | May 10 | Oct 17 | 176 |
| Grayslake | Apr 29 | May 15 | Oct 20 | 174 |
| Grayville | Apr 7 | Apr 23 | Oct 25 | 201 |
| Green Oaks | Apr 30 | May 14 | Oct 19 | 172 |
| Green Valley | Apr 17 | May 4 | Oct 18 | 184 |
| Greenfield | Apr 13 | Apr 28 | Oct 22 | 192 |
| Greenup | Apr 14 | Apr 30 | Oct 20 | 189 |
| Greenview | Apr 17 | May 4 | Oct 18 | 184 |
| Greenville | Apr 10 | Apr 24 | Oct 24 | 197 |
| Greenwood | May 1 | May 19 | Oct 11 | 163 |
| Gridley | Apr 23 | May 7 | Oct 15 | 175 |
| Griggsville | Apr 18 | May 5 | Oct 15 | 180 |
| Gulfport | Apr 18 | May 3 | Oct 20 | 185 |
| Gurnee | Apr 30 | May 14 | Oct 19 | 172 |
| Hainesville | Apr 29 | May 15 | Oct 20 | 174 |
| Hamburg | Apr 20 | May 5 | Oct 20 | 183 |
| Hamel | Apr 4 | Apr 19 | Nov 5 | 215 |
| Hamilton | Apr 10 | Apr 26 | Oct 27 | 200 |
| Hammond | Apr 16 | Apr 30 | Oct 22 | 189 |
| Hampshire | Apr 26 | May 12 | Oct 18 | 175 |
| Hampton | Apr 16 | Apr 30 | Oct 25 | 192 |
| Hanaford | Apr 4 | Apr 21 | Oct 28 | 207 |
| Hanna City | Apr 16 | May 4 | Oct 23 | 190 |
| Hanover | May 1 | May 17 | Oct 9 | 161 |
| Hanover Park | Apr 30 | May 16 | Oct 13 | 166 |
| Hardin | Apr 20 | May 5 | Oct 20 | 183 |
| Harmon | Apr 24 | May 9 | Oct 14 | 173 |
| Harrisburg | Apr 7 | Apr 25 | Oct 26 | 202 |
| Harristown | Apr 14 | May 1 | Oct 24 | 193 |
| Hartford | Apr 4 | Apr 19 | Nov 5 | 215 |
| Hartsburg | Apr 20 | May 4 | Oct 16 | 179 |
| Harvard | Apr 28 | May 14 | Oct 12 | 167 |
| Harvel | Apr 12 | Apr 27 | Oct 20 | 191 |
| Harvey | Apr 23 | May 11 | Oct 20 | 180 |
| Harwood Heights | Apr 16 | May 1 | Oct 28 | 195 |
| Havana | Apr 17 | May 3 | Oct 19 | 185 |
| Hawthorn Woods | Apr 29 | May 15 | Oct 20 | 174 |
| Hazel Crest | Apr 23 | May 11 | Oct 20 | 180 |
| Hebron | Apr 30 | May 16 | Oct 13 | 166 |
| Hecker | Apr 12 | Apr 28 | Oct 20 | 191 |
| Henderson | Apr 20 | May 5 | Oct 19 | 182 |
| Hennepin | Apr 18 | May 3 | Oct 22 | 187 |
| Henning | Apr 22 | May 8 | Oct 19 | 180 |
| Henry | Apr 18 | May 3 | Oct 22 | 187 |
| Herrick | Apr 15 | May 1 | Oct 19 | 187 |
| Herrin | Apr 9 | Apr 25 | Oct 22 | 196 |
| Herscher | Apr 19 | May 3 | Oct 24 | 188 |
| Hettick | Apr 14 | Apr 30 | Oct 21 | 190 |
| Heyworth | Apr 21 | May 5 | Oct 20 | 182 |
| Hickory Hills | Apr 19 | May 5 | Oct 22 | 186 |
| Hidalgo | Apr 13 | Apr 29 | Oct 22 | 192 |
| Highland | Apr 6 | Apr 22 | Oct 29 | 206 |
| Highland Park | Apr 26 | May 11 | Oct 21 | 178 |
| Highwood | Apr 26 | May 11 | Oct 21 | 178 |
| Hillcrest | Apr 26 | May 12 | Oct 13 | 170 |
| Hillsboro | Apr 13 | Apr 28 | Oct 24 | 194 |
| Hillsdale | Apr 16 | Apr 30 | Oct 25 | 192 |
| Hillside | Apr 16 | May 1 | Oct 28 | 195 |
| Hillview | Apr 13 | Apr 28 | Oct 22 | 192 |
| Hinckley | Apr 28 | May 11 | Oct 13 | 168 |
| Hindsboro | Apr 15 | May 1 | Oct 20 | 188 |
| Hinsdale | Apr 19 | May 5 | Oct 22 | 186 |
| Hodgkins | Apr 19 | May 5 | Oct 22 | 186 |
| Hoffman | Apr 6 | Apr 22 | Oct 29 | 206 |
| Hoffman Estates | Apr 30 | May 16 | Oct 13 | 166 |
| Holiday Hills | May 1 | May 19 | Oct 11 | 163 |
| Hollowayville | Apr 24 | May 10 | Oct 17 | 176 |
| Homer | Apr 20 | May 7 | Oct 21 | 184 |
| Homer Glen | Apr 20 | May 6 | Oct 22 | 185 |
| Hometown | Apr 10 | Apr 26 | Nov 1 | 205 |
| Homewood | Apr 23 | May 11 | Oct 20 | 180 |
| Hoopeston | Apr 22 | May 8 | Oct 19 | 180 |
| Hooppole | Apr 20 | May 6 | Oct 20 | 183 |
| Hopedale | Apr 21 | May 7 | Oct 17 | 179 |
| Hopewell | Apr 20 | May 7 | Oct 17 | 180 |
| Hopkins Park | Apr 19 | May 3 | Oct 24 | 188 |
| Hoyleton | Apr 7 | Apr 22 | Oct 26 | 202 |
| Hudson | Apr 25 | May 11 | Oct 16 | 174 |
| Huey | Apr 6 | Apr 22 | Oct 29 | 206 |
| Hull | Apr 4 | Apr 19 | Nov 4 | 214 |
| Humboldt | Apr 11 | Apr 28 | Oct 29 | 201 |
| Hume | Apr 19 | May 3 | Oct 19 | 183 |
| Huntley | Apr 25 | May 9 | Oct 22 | 180 |
| Hurst | Apr 9 | Apr 25 | Oct 22 | 196 |
| Hutsonville | Apr 13 | Apr 28 | Oct 22 | 192 |
| Illiopolis | Apr 14 | May 1 | Oct 24 | 193 |
| Ina | Apr 4 | Apr 21 | Oct 28 | 207 |
| Indian Creek | Apr 29 | May 15 | Oct 20 | 174 |
| Indian Head Park | Apr 19 | May 5 | Oct 22 | 186 |
| Indianola | Apr 19 | May 3 | Oct 19 | 183 |
| Industry | Apr 16 | May 3 | Oct 23 | 190 |
| Inverness | Apr 25 | May 12 | Oct 19 | 177 |
| Iola | Apr 10 | Apr 26 | Oct 23 | 196 |
| Ipava | Apr 17 | May 3 | Oct 19 | 185 |
| Iroquois | Apr 23 | May 8 | Oct 14 | 174 |
| Irving | Apr 13 | Apr 28 | Oct 24 | 194 |
| Irvington | Apr 9 | Apr 25 | Oct 24 | 198 |
| Irwin | Apr 19 | May 3 | Oct 24 | 188 |
| Island Lake | May 1 | May 19 | Oct 11 | 163 |
| Itasca | Apr 16 | May 1 | Oct 28 | 195 |
| Iuka | Apr 9 | Apr 23 | Oct 26 | 200 |
| Ivesdale | Apr 23 | May 9 | Oct 13 | 173 |
| Jacksonville | Apr 19 | May 5 | Oct 17 | 181 |
| Jeffersonville | Apr 7 | Apr 23 | Oct 26 | 202 |
| Jeisyville | Apr 12 | Apr 27 | Oct 20 | 191 |
| Jerome | Apr 15 | Apr 30 | Oct 22 | 190 |
| Jerseyville | Apr 14 | Apr 30 | Oct 19 | 188 |
| Jewett | Apr 13 | Apr 29 | Oct 22 | 192 |
| Johnsburg | May 1 | May 19 | Oct 11 | 163 |
| Johnsonville | Apr 9 | Apr 23 | Oct 24 | 198 |
| Johnston City | Apr 9 | Apr 25 | Oct 22 | 196 |
| Joliet | Apr 19 | May 7 | Oct 25 | 189 |
| Jonesboro | Apr 8 | Apr 26 | Oct 29 | 204 |
| Joppa | Apr 3 | Apr 20 | Oct 27 | 207 |
| Joy | Apr 22 | May 6 | Oct 19 | 180 |
| Junction | Apr 7 | Apr 25 | Oct 26 | 202 |
| Junction City | Apr 9 | Apr 23 | Oct 26 | 200 |
| Justice | Apr 10 | Apr 26 | Nov 1 | 205 |
| Kampsville | Apr 20 | May 5 | Oct 20 | 183 |
| Kane | Apr 14 | Apr 30 | Oct 19 | 188 |
| Kaneville | Apr 28 | May 11 | Oct 13 | 168 |
| Kangley | Apr 12 | Apr 25 | Oct 28 | 199 |
| Kankakee | Apr 19 | May 3 | Oct 24 | 188 |
| Kansas | Apr 15 | May 3 | Oct 23 | 191 |
| Kappa | Apr 25 | May 11 | Oct 16 | 174 |
| Karnak | Apr 3 | Apr 21 | Nov 5 | 216 |
| Kaskaskia | Apr 8 | Apr 25 | Oct 30 | 205 |
| Keenes | Apr 7 | Apr 23 | Oct 26 | 202 |
| Keensburg | Apr 2 | Apr 17 | Oct 31 | 212 |
| Keithsburg | Apr 14 | May 2 | Oct 24 | 193 |
| Kell | Apr 9 | Apr 25 | Oct 24 | 198 |
| Kempton | Apr 25 | May 10 | Oct 20 | 178 |
| Kenilworth | Apr 26 | May 11 | Oct 21 | 178 |
| Kenney | Apr 20 | May 4 | Oct 16 | 179 |
| Kewanee | Apr 24 | May 8 | Oct 17 | 176 |
| Keyesport | Apr 6 | Apr 22 | Oct 29 | 206 |
| Kilbourne | Apr 17 | May 3 | Oct 19 | 185 |
| Kildeer | Apr 29 | May 15 | Oct 20 | 174 |
| Kincaid | Apr 12 | Apr 27 | Oct 20 | 191 |
| Kinderhook | Apr 4 | Apr 19 | Nov 4 | 214 |
| Kingston | Apr 24 | May 10 | Oct 18 | 177 |
| Kingston Mines | Apr 16 | May 4 | Oct 23 | 190 |
| Kinmundy | Apr 9 | Apr 23 | Oct 26 | 200 |
| Kinsman | Apr 27 | May 14 | Oct 15 | 171 |
| Kirkland | Apr 24 | May 10 | Oct 18 | 177 |
| Kirkwood | Apr 22 | May 7 | Oct 14 | 175 |
| Knoxville | Apr 21 | May 6 | Oct 20 | 182 |
| La Fayette | Apr 26 | May 11 | Oct 12 | 169 |
| La Grange | Apr 19 | May 5 | Oct 22 | 186 |
| La Grange Park | Apr 11 | Apr 27 | Oct 31 | 203 |
| La Harpe | Apr 21 | May 5 | Oct 19 | 181 |
| La Moille | Apr 27 | May 14 | Oct 12 | 168 |
| La Prairie | Apr 18 | May 1 | Oct 21 | 186 |
| La Rose | Apr 20 | May 7 | Oct 17 | 180 |
| Lacon | Apr 20 | May 7 | Oct 17 | 180 |
| Ladd | Apr 24 | May 8 | Oct 18 | 177 |
| Lake Barrington | Apr 25 | May 12 | Oct 19 | 177 |
| Lake Bluff | Apr 30 | May 14 | Oct 19 | 172 |
| Lake Forest | Apr 26 | May 11 | Oct 21 | 178 |
| Lake in the Hills | Apr 26 | May 12 | Oct 18 | 175 |
| Lake Ka-Ho | Apr 13 | Apr 28 | Oct 24 | 194 |
| Lake Villa | Apr 24 | May 9 | Oct 23 | 182 |
| Lake Zurich | Apr 29 | May 15 | Oct 20 | 174 |
| Lakemoor | May 1 | May 19 | Oct 11 | 163 |
| Lakewood | Apr 25 | May 9 | Oct 22 | 180 |
| Lanark | May 2 | May 18 | Oct 7 | 158 |
| Lansing | Apr 23 | May 11 | Oct 20 | 180 |
| LaSalle | Apr 24 | May 8 | Oct 18 | 177 |
| Latham | Apr 14 | May 1 | Oct 24 | 193 |
| Lawrenceville | Apr 8 | Apr 22 | Oct 26 | 201 |
| Le Roy | Apr 25 | May 11 | Oct 16 | 174 |
| Leaf River | Apr 29 | May 14 | Oct 7 | 161 |
| Lebanon | Apr 12 | Apr 28 | Oct 20 | 191 |
| Lee | Apr 28 | May 13 | Oct 10 | 165 |
| Leland | Apr 27 | May 12 | Oct 15 | 171 |
| Leland Grove | Apr 15 | Apr 30 | Oct 22 | 190 |
| Lemont | Apr 19 | May 5 | Oct 22 | 186 |
| Lena | Apr 27 | May 12 | Oct 9 | 165 |
| Lenzburg | Apr 12 | Apr 29 | Oct 22 | 193 |
| Leonore | Apr 20 | May 5 | Oct 22 | 185 |
| Lerna | Apr 15 | Apr 30 | Oct 24 | 192 |
| Lewistown | Apr 17 | May 3 | Oct 19 | 185 |
| Lexington | Apr 23 | May 7 | Oct 15 | 175 |
| Liberty | Apr 14 | May 1 | Oct 23 | 192 |
| Libertyville | Apr 30 | May 14 | Oct 19 | 172 |
| Lily Lake | Apr 25 | May 12 | Oct 19 | 177 |
| Lima | Apr 11 | Apr 29 | Oct 23 | 195 |
| Limestone | Apr 19 | May 3 | Oct 24 | 188 |
| Lincoln | Apr 20 | May 4 | Oct 16 | 179 |
| Lincolnshire | Apr 19 | May 3 | Oct 26 | 190 |
| Lincolnwood | Apr 26 | May 11 | Oct 21 | 178 |
| Lindenhurst | Apr 24 | May 9 | Oct 23 | 182 |
| Lisbon | Apr 20 | May 6 | Oct 23 | 186 |
| Lisle | Apr 28 | May 14 | Oct 16 | 171 |
| Litchfield | Apr 13 | Apr 28 | Oct 24 | 194 |
| Little York | Apr 22 | May 7 | Oct 14 | 175 |
| Littleton | Apr 16 | May 3 | Oct 23 | 190 |
| Liverpool | Apr 17 | May 3 | Oct 19 | 185 |
| Livingston | Apr 13 | Apr 28 | Oct 24 | 194 |
| Loami | Apr 7 | Apr 21 | Oct 29 | 205 |
| Lockport | Apr 20 | May 6 | Oct 22 | 185 |
| Loda | Apr 23 | May 9 | Oct 12 | 172 |
| Lomax | Apr 18 | May 3 | Oct 20 | 185 |
| Lombard | Apr 28 | May 14 | Oct 16 | 171 |
| London Mills | Apr 22 | May 8 | Oct 19 | 180 |
| Long Creek | Apr 16 | Apr 30 | Oct 22 | 189 |
| Long Grove | Apr 29 | May 15 | Oct 20 | 174 |
| Long Point | Apr 12 | Apr 25 | Oct 28 | 199 |
| Longview | Apr 15 | May 1 | Oct 20 | 188 |
| Loraine | Apr 18 | May 1 | Oct 21 | 186 |
| Lostant | Apr 24 | May 8 | Oct 18 | 177 |
| Louisville | Apr 10 | Apr 26 | Oct 23 | 196 |
| Loves Park | Apr 24 | May 8 | Oct 17 | 176 |
| Lovington | Apr 15 | Apr 30 | Oct 22 | 190 |
| Ludlow | Apr 21 | May 6 | Oct 18 | 180 |
| Lyndon | Apr 26 | May 11 | Oct 13 | 170 |
| Lynnville | Apr 18 | May 5 | Oct 20 | 185 |
| Lynwood | Apr 23 | May 11 | Oct 20 | 180 |
| Lyons | Apr 11 | Apr 27 | Oct 31 | 203 |
| Macedonia | Apr 4 | Apr 21 | Oct 28 | 207 |
| Machesney Park | May 1 | May 16 | Oct 12 | 164 |
| Mackinaw | Apr 21 | May 7 | Oct 17 | 179 |
| Macomb | Apr 17 | May 2 | Oct 22 | 188 |
| Macon | Apr 14 | May 1 | Oct 24 | 193 |
| Madison | Apr 8 | Apr 23 | Oct 26 | 201 |
| Maeystown | Apr 9 | Apr 25 | Oct 26 | 200 |
| Magnolia | Apr 18 | May 3 | Oct 22 | 187 |
| Mahomet | Apr 23 | May 9 | Oct 13 | 173 |
| Makanda | Apr 9 | Apr 25 | Oct 22 | 196 |
| Malden | Apr 22 | May 7 | Oct 17 | 178 |
| Malta | Apr 24 | May 10 | Oct 18 | 177 |
| Manchester | Apr 13 | Apr 28 | Oct 22 | 192 |
| Manhattan | Apr 19 | May 7 | Oct 25 | 189 |
| Manito | Apr 16 | May 4 | Oct 23 | 190 |
| Manlius | Apr 24 | May 9 | Oct 14 | 173 |
| Mansfield | Apr 23 | May 9 | Oct 13 | 173 |
| Manteno | Apr 19 | May 3 | Oct 24 | 188 |
| Maple Park | Apr 24 | May 10 | Oct 18 | 177 |
| Mapleton | Apr 16 | May 4 | Oct 23 | 190 |
| Maquon | Apr 21 | May 6 | Oct 20 | 182 |
| Marengo | Apr 28 | May 14 | Oct 12 | 167 |
| Marietta | Apr 17 | May 2 | Oct 22 | 188 |
| Marine | Apr 12 | Apr 28 | Oct 20 | 191 |
| Marion | Apr 9 | Apr 25 | Oct 22 | 196 |
| Marissa | Apr 12 | Apr 29 | Oct 22 | 193 |
| Mark | Apr 24 | May 10 | Oct 17 | 176 |
| Markham | Apr 23 | May 11 | Oct 20 | 180 |
| Maroa | Apr 14 | May 1 | Oct 24 | 193 |
| Marquette Heights | Apr 16 | May 4 | Oct 23 | 190 |
| Marseilles | Apr 27 | May 13 | Oct 17 | 173 |
| Marshall | Apr 21 | May 9 | Oct 20 | 182 |
| Martinsville | Apr 14 | Apr 30 | Oct 20 | 189 |
| Martinton | Apr 24 | May 10 | Oct 16 | 175 |
| Maryville | Apr 4 | Apr 19 | Nov 5 | 215 |
| Mascoutah | Apr 12 | Apr 28 | Oct 20 | 191 |
| Mason | Apr 13 | Apr 29 | Oct 24 | 194 |
| Mason City | Apr 17 | May 4 | Oct 18 | 184 |
| Matherville | Apr 22 | May 6 | Oct 19 | 180 |
| Matteson | Apr 23 | May 11 | Oct 20 | 180 |
| Mattoon | Apr 11 | Apr 28 | Oct 29 | 201 |
| Maunie | Apr 15 | May 2 | Oct 19 | 187 |
| Maywood | Apr 11 | Apr 27 | Oct 31 | 203 |
| Mazon | Apr 20 | May 6 | Oct 23 | 186 |
| McClure | Apr 5 | Apr 21 | Oct 25 | 203 |
| McCook | Apr 11 | Apr 27 | Oct 31 | 203 |
| McCullom Lake | May 1 | May 19 | Oct 11 | 163 |
| McHenry | May 1 | May 19 | Oct 11 | 163 |
| McLean | Apr 21 | May 5 | Oct 20 | 182 |
| McLeansboro | Apr 11 | Apr 26 | Oct 21 | 193 |
| McNabb | Apr 18 | May 3 | Oct 22 | 187 |
| Mechanicsburg | Apr 15 | Apr 30 | Oct 22 | 190 |
| Media | Apr 21 | May 5 | Oct 19 | 181 |
| Medora | Apr 14 | Apr 30 | Oct 19 | 188 |
| Melrose Park | Apr 16 | May 1 | Oct 28 | 195 |
| Melvin | Apr 21 | May 5 | Oct 17 | 179 |
| Mendon | Apr 14 | May 1 | Oct 23 | 192 |
| Mendota | Apr 27 | May 12 | Oct 15 | 171 |
| Menominee | Apr 19 | May 4 | Oct 21 | 185 |
| Meredosia | Apr 18 | May 5 | Oct 20 | 185 |
| Merrionette Park | Apr 10 | Apr 26 | Nov 1 | 205 |
| Metamora | Apr 20 | May 7 | Oct 17 | 180 |
| Metcalf | Apr 19 | May 3 | Oct 19 | 183 |
| Metropolis | Apr 6 | Apr 23 | Oct 27 | 204 |
| Mettawa | Apr 29 | May 15 | Oct 20 | 174 |
| Middletown | Apr 17 | May 4 | Oct 18 | 184 |
| Midlothian | Apr 10 | Apr 26 | Nov 1 | 205 |
| Milan | Apr 24 | May 9 | Oct 18 | 177 |
| Milford | Apr 22 | May 8 | Oct 19 | 180 |
| Mill Creek | Apr 8 | Apr 26 | Oct 29 | 204 |
| Mill Shoals | Apr 7 | Apr 23 | Oct 26 | 202 |
| Millbrook | Apr 28 | May 11 | Oct 13 | 168 |
| Milledgeville | Apr 29 | May 14 | Oct 7 | 161 |
| Millington | Apr 20 | May 6 | Oct 23 | 186 |
| Millstadt | Apr 8 | Apr 23 | Oct 26 | 201 |
| Milton | Apr 14 | Apr 30 | Oct 21 | 190 |
| Mineral | Apr 24 | May 8 | Oct 17 | 176 |
| Minier | Apr 21 | May 5 | Oct 20 | 182 |
| Minonk | Apr 26 | May 10 | Oct 17 | 174 |
| Minooka | Apr 16 | May 3 | Oct 26 | 193 |
| Modesto | Apr 7 | Apr 21 | Oct 29 | 205 |
| Mokena | Apr 20 | May 6 | Oct 22 | 185 |
| Moline | Apr 24 | May 9 | Oct 18 | 177 |
| Momence | Apr 29 | May 14 | Oct 16 | 170 |
| Monee | Apr 23 | May 11 | Oct 20 | 180 |
| Monmouth | Apr 22 | May 10 | Oct 15 | 176 |
| Monroe Center | Apr 24 | May 8 | Oct 17 | 176 |
| Montgomery | Apr 19 | May 4 | Oct 23 | 187 |
| Monticello | Apr 23 | May 9 | Oct 13 | 173 |
| Montrose | Apr 13 | Apr 29 | Oct 22 | 192 |
| Morris | Apr 20 | May 6 | Oct 23 | 186 |
| Morrison | Apr 26 | May 11 | Oct 13 | 170 |
| Morrisonville | Apr 12 | Apr 27 | Oct 20 | 191 |
| Morton | Apr 21 | May 7 | Oct 17 | 179 |
| Morton Grove | Apr 26 | May 11 | Oct 21 | 178 |
| Mound City | Apr 2 | Apr 17 | Oct 31 | 212 |
| Mound Station | Apr 18 | May 1 | Oct 21 | 186 |
| Mounds | Apr 2 | Apr 17 | Oct 31 | 212 |
| Mount Auburn | Apr 14 | May 1 | Oct 24 | 193 |
| Mount Carmel | Apr 2 | Apr 17 | Oct 31 | 212 |
| Mount Carroll | May 2 | May 18 | Oct 7 | 158 |
| Mount Clare | Apr 14 | Apr 30 | Oct 21 | 190 |
| Mount Erie | Apr 7 | Apr 23 | Oct 26 | 202 |
| Mount Morris | Apr 29 | May 14 | Oct 7 | 161 |
| Mount Olive | Apr 13 | Apr 28 | Oct 24 | 194 |
| Mount Prospect | Apr 19 | May 3 | Oct 26 | 190 |
| Mount Pulaski | Apr 20 | May 4 | Oct 16 | 179 |
| Mount Sterling | Apr 18 | May 5 | Oct 15 | 180 |
| Mount Vernon | Apr 11 | Apr 26 | Oct 22 | 194 |
| Mount Zion | Apr 16 | Apr 30 | Oct 22 | 189 |
| Moweaqua | Apr 14 | May 1 | Oct 24 | 193 |
| Muddy | Apr 7 | Apr 25 | Oct 26 | 202 |
| Mulberry Grove | Apr 10 | Apr 24 | Oct 24 | 197 |
| Muncie | Apr 20 | May 7 | Oct 21 | 184 |
| Mundelein | Apr 29 | May 15 | Oct 20 | 174 |
| Murphysboro | Apr 9 | Apr 25 | Oct 22 | 196 |
| Murrayville | Apr 17 | May 1 | Oct 21 | 187 |
| Naperville | Apr 28 | May 14 | Oct 16 | 171 |
| Naplate | Apr 20 | May 5 | Oct 22 | 185 |
| Naples | Apr 18 | May 5 | Oct 20 | 185 |
| Nashville | Apr 7 | Apr 22 | Oct 26 | 202 |
| Nason | Apr 4 | Apr 21 | Oct 28 | 207 |
| Nauvoo | Apr 12 | Apr 26 | Oct 25 | 196 |
| Nebo | Apr 4 | Apr 23 | Nov 1 | 211 |
| Nelson | Apr 21 | May 5 | Oct 19 | 181 |
| Neoga | Apr 16 | Apr 29 | Oct 20 | 187 |
| Neponset | Apr 24 | May 8 | Oct 17 | 176 |
| New Athens | Apr 12 | Apr 28 | Oct 20 | 191 |
| New Baden | Apr 12 | Apr 28 | Oct 20 | 191 |
| New Bedford | Apr 24 | May 9 | Oct 14 | 173 |
| New Berlin | Apr 15 | Apr 30 | Oct 22 | 190 |
| New Boston | Apr 14 | May 2 | Oct 24 | 193 |
| New Burnside | Apr 14 | Apr 30 | Oct 21 | 190 |
| New Canton | Apr 4 | Apr 19 | Nov 4 | 214 |
| New Douglas | Apr 13 | Apr 28 | Oct 24 | 194 |
| New Grand Chain | Apr 3 | Apr 21 | Nov 5 | 216 |
| New Haven | Apr 5 | Apr 21 | Oct 31 | 209 |
| New Holland | Apr 17 | May 4 | Oct 18 | 184 |
| New Lenox | Apr 19 | May 7 | Oct 25 | 189 |
| New Milford | Apr 24 | May 8 | Oct 17 | 176 |
| New Minden | Apr 7 | Apr 22 | Oct 26 | 202 |
| New Salem | Apr 14 | Apr 30 | Oct 21 | 190 |
| Newark | Apr 20 | May 6 | Oct 23 | 186 |
| Newman | Apr 19 | May 3 | Oct 19 | 183 |
| Newton | Apr 13 | Apr 29 | Oct 22 | 192 |
| Niantic | Apr 14 | May 1 | Oct 24 | 193 |
| Niles | Apr 16 | May 1 | Oct 28 | 195 |
| Nilwood | Apr 7 | Apr 21 | Oct 29 | 205 |
| Noble | Apr 15 | May 3 | Oct 23 | 191 |
| Nokomis | Apr 12 | Apr 27 | Oct 20 | 191 |
| Nora | Apr 27 | May 12 | Oct 9 | 165 |
| Normal | Apr 25 | May 11 | Oct 16 | 174 |
| Norridge | Apr 16 | May 1 | Oct 28 | 195 |
| Norris | Apr 16 | May 4 | Oct 23 | 190 |
| Norris City | Apr 15 | May 2 | Oct 19 | 187 |
| North Aurora | Apr 19 | May 4 | Oct 23 | 187 |
| North Barrington | Apr 29 | May 15 | Oct 20 | 174 |
| North Chicago | Apr 30 | May 14 | Oct 19 | 172 |
| North City | Apr 4 | Apr 19 | Oct 27 | 206 |
| North Henderson | Apr 20 | May 5 | Oct 19 | 182 |
| North Pekin | Apr 16 | May 4 | Oct 23 | 190 |
| North Riverside | Apr 11 | Apr 27 | Oct 31 | 203 |
| North Utica | Apr 24 | May 8 | Oct 18 | 177 |
| Northbrook | Apr 19 | May 3 | Oct 26 | 190 |
| Northfield | Apr 26 | May 11 | Oct 21 | 178 |
| Northlake | Apr 16 | May 1 | Oct 28 | 195 |
| Norwood | Apr 16 | May 4 | Oct 23 | 190 |
| O'Fallon | Apr 12 | Apr 28 | Oct 20 | 191 |
| Oak Brook | Apr 28 | May 14 | Oct 16 | 171 |
| Oak Forest | Apr 23 | May 11 | Oct 20 | 180 |
| Oak Grove | Apr 24 | May 9 | Oct 18 | 177 |
| Oak Lawn | Apr 10 | Apr 26 | Nov 1 | 205 |
| Oak Park | Apr 11 | Apr 27 | Oct 31 | 203 |
| Oakbrook Terrace | Apr 28 | May 14 | Oct 16 | 171 |
| Oakdale | Apr 7 | Apr 22 | Oct 26 | 202 |
| Oakford | Apr 13 | Apr 28 | Oct 21 | 191 |
| Oakland | Apr 15 | May 3 | Oct 23 | 191 |
| Oakwood | Apr 21 | May 7 | Oct 20 | 182 |
| Oakwood Hills | May 1 | May 19 | Oct 11 | 163 |
| Oblong | Apr 13 | Apr 28 | Oct 22 | 192 |
| Oconee | Apr 17 | May 3 | Oct 23 | 189 |
| Odell | Apr 16 | May 2 | Oct 24 | 191 |
| Odin | Apr 9 | Apr 23 | Oct 26 | 200 |
| Ogden | Apr 20 | May 7 | Oct 21 | 184 |
| Oglesby | Apr 24 | May 8 | Oct 18 | 177 |
| Ohio | Apr 24 | May 9 | Oct 14 | 173 |
| Ohlman | Apr 17 | May 3 | Oct 23 | 189 |
| Okawville | Apr 7 | Apr 22 | Oct 26 | 202 |
| Old Mill Creek | Apr 30 | May 16 | Oct 21 | 174 |
| Old Ripley | Apr 6 | Apr 22 | Oct 29 | 206 |
| Old Shawneetown | Apr 5 | Apr 21 | Oct 31 | 209 |
| Olmsted | Apr 3 | Apr 21 | Nov 5 | 216 |
| Olney | Apr 15 | May 3 | Oct 23 | 191 |
| Olympia Fields | Apr 23 | May 11 | Oct 20 | 180 |
| Omaha | Apr 15 | May 2 | Oct 19 | 187 |
| Onarga | Apr 25 | May 10 | Oct 20 | 178 |
| Oneida | Apr 28 | May 12 | Oct 12 | 167 |
| Oquawka | Apr 8 | Apr 23 | Oct 29 | 204 |
| Orangeville | Apr 27 | May 12 | Oct 14 | 170 |
| Oreana | Apr 16 | Apr 30 | Oct 22 | 189 |
| Oregon | Apr 29 | May 14 | Oct 7 | 161 |
| Orient | Apr 4 | Apr 19 | Oct 27 | 206 |
| Orion | Apr 24 | May 9 | Oct 18 | 177 |
| Orland Hills | Apr 23 | May 11 | Oct 20 | 180 |
| Orland Park | Apr 19 | May 5 | Oct 22 | 186 |
| Oswego | Apr 19 | May 4 | Oct 23 | 187 |
| Ottawa | Apr 20 | May 5 | Oct 22 | 185 |
| Otterville | Apr 5 | Apr 21 | Oct 27 | 205 |
| Owaneco | Apr 17 | May 3 | Oct 23 | 189 |
| Palatine | Apr 25 | May 12 | Oct 19 | 177 |
| Palestine | Apr 12 | Apr 26 | Oct 22 | 193 |
| Palmer | Apr 12 | Apr 27 | Oct 20 | 191 |
| Palmyra | Apr 14 | Apr 30 | Oct 21 | 190 |
| Palos Heights | Apr 10 | Apr 26 | Nov 1 | 205 |
| Palos Hills | Apr 19 | May 5 | Oct 22 | 186 |
| Palos Park | Apr 19 | May 5 | Oct 22 | 186 |
| Pana | Apr 17 | May 3 | Oct 23 | 189 |
| Panama | Apr 13 | Apr 28 | Oct 24 | 194 |
| Panola | Apr 26 | May 10 | Oct 17 | 174 |
| Papineau | Apr 24 | May 10 | Oct 16 | 175 |
| Paris | Apr 21 | May 9 | Oct 20 | 182 |
| Park City | Apr 30 | May 14 | Oct 19 | 172 |
| Park Forest | Apr 23 | May 11 | Oct 20 | 180 |
| Park Ridge | Apr 16 | May 1 | Oct 28 | 195 |
| Parkersburg | Apr 15 | May 3 | Oct 23 | 191 |
| Patoka | Apr 9 | Apr 23 | Oct 26 | 200 |
| Paw Paw | Apr 27 | May 12 | Oct 15 | 171 |
| Pawnee | Apr 12 | Apr 27 | Oct 20 | 191 |
| Paxton | Apr 23 | May 9 | Oct 12 | 172 |
| Payson | Apr 10 | Apr 25 | Oct 27 | 200 |
| Pearl | Apr 14 | Apr 30 | Oct 21 | 190 |
| Pearl City | Apr 26 | May 11 | Oct 13 | 170 |
| Pecatonica | Apr 26 | May 11 | Oct 13 | 170 |
| Pekin | Apr 16 | May 4 | Oct 23 | 190 |
| Peoria | Apr 16 | May 4 | Oct 23 | 190 |
| Peoria Heights | Apr 16 | May 4 | Oct 23 | 190 |
| Peotone | Apr 23 | May 11 | Oct 20 | 180 |
| Percy | Apr 12 | Apr 29 | Oct 22 | 193 |
| Perry | Apr 18 | May 5 | Oct 15 | 180 |
| Peru | Apr 24 | May 8 | Oct 18 | 177 |
| Pesotum | Apr 15 | May 1 | Oct 20 | 188 |
| Petersburg | Apr 13 | Apr 28 | Oct 21 | 191 |
| Phillipstown | Apr 7 | Apr 23 | Oct 25 | 201 |
| Philo | Apr 19 | May 5 | Oct 17 | 181 |
| Phoenix | Apr 23 | May 11 | Oct 20 | 180 |
| Pierron | Apr 6 | Apr 22 | Oct 29 | 206 |
| Pinckneyville | Apr 6 | Apr 22 | Oct 22 | 199 |
| Pingree Grove | Apr 26 | May 12 | Oct 18 | 175 |
| Piper City | Apr 25 | May 10 | Oct 20 | 178 |
| Pittsburg | Apr 7 | Apr 25 | Oct 26 | 202 |
| Pittsfield | Apr 14 | Apr 30 | Oct 21 | 190 |
| Plainfield | Apr 20 | May 6 | Oct 22 | 185 |
| Plainville | Apr 14 | May 1 | Oct 23 | 192 |
| Plano | Apr 28 | May 11 | Oct 13 | 168 |
| Plattville | Apr 16 | May 3 | Oct 26 | 193 |
| Pleasant Hill | Apr 4 | Apr 23 | Nov 1 | 211 |
| Pleasant Plains | Apr 19 | May 4 | Oct 19 | 183 |
| Plymouth | Apr 13 | Apr 30 | Oct 22 | 192 |
| Pocahontas | Apr 6 | Apr 22 | Oct 29 | 206 |
| Polo | Apr 29 | May 14 | Oct 7 | 161 |
| Pontiac | Apr 16 | May 2 | Oct 24 | 191 |
| Pontoon Beach | Apr 4 | Apr 19 | Nov 5 | 215 |
| Pontoosuc | Apr 12 | Apr 26 | Oct 25 | 196 |
| Poplar Grove | Apr 30 | May 17 | Oct 10 | 163 |
| Port Barrington | May 1 | May 19 | Oct 11 | 163 |
| Port Byron | Apr 16 | Apr 30 | Oct 25 | 192 |
| Posen | Apr 10 | Apr 26 | Nov 1 | 205 |
| Potomac | Apr 22 | May 8 | Oct 19 | 180 |
| Prairie City | Apr 17 | May 2 | Oct 22 | 188 |
| Prairie du Rocher | Apr 8 | Apr 25 | Oct 30 | 205 |
| Prairie Grove | May 1 | May 19 | Oct 11 | 163 |
| Princeton | Apr 22 | May 7 | Oct 17 | 178 |
| Princeville | Apr 22 | May 6 | Oct 14 | 175 |
| Prophetstown | Apr 26 | May 11 | Oct 13 | 170 |
| Prospect Heights | Apr 19 | May 3 | Oct 26 | 190 |
| Pulaski | Apr 3 | Apr 21 | Nov 5 | 216 |
| Quincy | Apr 8 | Apr 23 | Oct 30 | 205 |
| Radom | Apr 7 | Apr 22 | Oct 26 | 202 |
| Raleigh | Apr 7 | Apr 25 | Oct 26 | 202 |
| Ramsey | Apr 15 | May 1 | Oct 19 | 187 |
| Rankin | Apr 22 | May 8 | Oct 19 | 180 |
| Ransom | Apr 12 | Apr 25 | Oct 28 | 199 |
| Rantoul | Apr 21 | May 6 | Oct 18 | 180 |
| Rapids City | Apr 16 | Apr 30 | Oct 25 | 192 |
| Raritan | Apr 21 | May 5 | Oct 19 | 181 |
| Raymond | Apr 12 | Apr 27 | Oct 20 | 191 |
| Red Bud | Apr 8 | Apr 25 | Oct 30 | 205 |
| Reddick | Apr 27 | May 14 | Oct 15 | 171 |
| Redmon | Apr 21 | May 9 | Oct 20 | 182 |
| Reynolds | Apr 22 | May 6 | Oct 19 | 180 |
| Richmond | Apr 30 | May 16 | Oct 13 | 166 |
| Richton Park | Apr 23 | May 11 | Oct 20 | 180 |
| Richview | Apr 7 | Apr 22 | Oct 26 | 202 |
| Ridge Farm | Apr 19 | May 3 | Oct 19 | 183 |
| Ridgway | Apr 5 | Apr 21 | Oct 31 | 209 |
| Ridott | Apr 26 | May 11 | Oct 13 | 170 |
| Ringwood | May 1 | May 19 | Oct 11 | 163 |
| Rio | Apr 20 | May 5 | Oct 19 | 182 |
| Ripley | Apr 18 | May 5 | Oct 15 | 180 |
| River Forest | Apr 11 | Apr 27 | Oct 31 | 203 |
| River Grove | Apr 16 | May 1 | Oct 28 | 195 |
| Riverdale | Apr 10 | Apr 26 | Nov 1 | 205 |
| Riverside | Apr 11 | Apr 27 | Oct 31 | 203 |
| Riverton | Apr 14 | Apr 29 | Oct 20 | 189 |
| Riverwoods | Apr 19 | May 3 | Oct 26 | 190 |
| Roanoke | Apr 26 | May 10 | Oct 17 | 174 |
| Robbins | Apr 10 | Apr 26 | Nov 1 | 205 |
| Roberts | Apr 25 | May 10 | Oct 20 | 178 |
| Robinson | Apr 13 | Apr 28 | Oct 22 | 192 |
| Rochelle | Apr 26 | May 12 | Oct 13 | 170 |
| Rochester | Apr 15 | Apr 30 | Oct 22 | 190 |
| Rock City | Apr 26 | May 11 | Oct 13 | 170 |
| Rock Falls | Apr 21 | May 5 | Oct 19 | 181 |
| Rock Island | Apr 24 | May 9 | Oct 18 | 177 |
| Rockbridge | Apr 14 | Apr 30 | Oct 19 | 188 |
| Rockdale | Apr 19 | May 7 | Oct 25 | 189 |
| Rockford | Apr 24 | May 8 | Oct 17 | 176 |
| Rockton | May 1 | May 16 | Oct 12 | 164 |
| Rockwood | Apr 19 | May 3 | Oct 20 | 184 |
| Rolling Meadows | Apr 19 | May 3 | Oct 26 | 190 |
| Romeoville | Apr 20 | May 6 | Oct 22 | 185 |
| Roodhouse | Apr 13 | Apr 28 | Oct 22 | 192 |
| Roscoe | May 1 | May 16 | Oct 12 | 164 |
| Rose Hill | Apr 13 | Apr 29 | Oct 22 | 192 |
| Roselle | Apr 30 | May 16 | Oct 13 | 166 |
| Rosemont | Apr 16 | May 1 | Oct 28 | 195 |
| Roseville | Apr 22 | May 8 | Oct 19 | 180 |
| Rosiclare | Apr 19 | May 8 | Oct 20 | 184 |
| Rossville | Apr 22 | May 8 | Oct 19 | 180 |
| Round Lake | Apr 24 | May 9 | Oct 23 | 182 |
| Round Lake Beach | Apr 24 | May 9 | Oct 23 | 182 |
| Round Lake Heights | Apr 24 | May 9 | Oct 23 | 182 |
| Round Lake Park | Apr 24 | May 9 | Oct 23 | 182 |
| Roxana | Apr 4 | Apr 19 | Nov 5 | 215 |
| Royal | Apr 20 | May 7 | Oct 21 | 184 |
| Royal Lakes | Apr 14 | Apr 30 | Oct 21 | 190 |
| Royalton | Apr 6 | Apr 22 | Oct 22 | 199 |
| Ruma | Apr 8 | Apr 25 | Oct 30 | 205 |
| Rushville | Apr 16 | May 3 | Oct 23 | 190 |
| Russellville | Apr 8 | Apr 22 | Oct 26 | 201 |
| Rutland | Apr 26 | May 10 | Oct 17 | 174 |
| Sadorus | Apr 23 | May 9 | Oct 13 | 173 |
| Sailor Springs | Apr 9 | Apr 23 | Oct 24 | 198 |
| Salem | Apr 9 | Apr 23 | Oct 26 | 200 |
| Sammons Point | Apr 19 | May 3 | Oct 24 | 188 |
| San Jose | Apr 17 | May 4 | Oct 18 | 184 |
| Sandoval | Apr 9 | Apr 23 | Oct 26 | 200 |
| Sandwich | Apr 28 | May 11 | Oct 13 | 168 |
| Sauget | Apr 8 | Apr 23 | Oct 26 | 201 |
| Sauk Village | Apr 23 | May 11 | Oct 20 | 180 |
| Saunemin | Apr 16 | May 2 | Oct 24 | 191 |
| Savanna | May 2 | May 18 | Oct 7 | 158 |
| Savoy | Apr 19 | May 5 | Oct 17 | 181 |
| Sawyerville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Saybrook | Apr 21 | May 5 | Oct 17 | 179 |
| Scales Mound | Apr 26 | May 11 | Oct 15 | 172 |
| Schaumburg | Apr 30 | May 16 | Oct 13 | 166 |
| Schiller Park | Apr 16 | May 1 | Oct 28 | 195 |
| Schram City | Apr 13 | Apr 28 | Oct 24 | 194 |
| Sciota | Apr 21 | May 5 | Oct 19 | 181 |
| Scottville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Seaton | Apr 22 | May 6 | Oct 19 | 180 |
| Seatonville | Apr 24 | May 10 | Oct 17 | 176 |
| Secor | Apr 21 | May 7 | Oct 17 | 179 |
| Seneca | Apr 27 | May 13 | Oct 17 | 173 |
| Sesser | Apr 4 | Apr 19 | Oct 27 | 206 |
| Shabbona | Apr 28 | May 13 | Oct 10 | 165 |
| Shannon | Apr 29 | May 14 | Oct 7 | 161 |
| Shawneetown | Apr 5 | Apr 21 | Oct 31 | 209 |
| Sheffield | Apr 24 | May 9 | Oct 14 | 173 |
| Shelbyville | Apr 10 | Apr 28 | Oct 24 | 197 |
| Sheldon | Apr 23 | May 8 | Oct 14 | 174 |
| Sheridan | Apr 27 | May 13 | Oct 17 | 173 |
| Sherman | Apr 14 | Apr 29 | Oct 20 | 189 |
| Sherrard | Apr 24 | May 9 | Oct 18 | 177 |
| Shiloh | Apr 12 | Apr 28 | Oct 20 | 191 |
| Shipman | Apr 14 | Apr 30 | Oct 21 | 190 |
| Shorewood | Apr 19 | May 7 | Oct 25 | 189 |
| Shumway | Apr 13 | Apr 29 | Oct 24 | 194 |
| Sibley | Apr 21 | May 5 | Oct 17 | 179 |
| Sidell | Apr 19 | May 3 | Oct 19 | 183 |
| Sidney | Apr 15 | Apr 29 | Oct 24 | 192 |
| Sigel | Apr 16 | Apr 29 | Oct 20 | 187 |
| Silvis | Apr 16 | Apr 30 | Oct 25 | 192 |
| Simpson | Apr 14 | Apr 30 | Oct 21 | 190 |
| Sims | Apr 7 | Apr 23 | Oct 26 | 202 |
| Skokie | Apr 26 | May 11 | Oct 21 | 178 |
| Sleepy Hollow | Apr 26 | May 12 | Oct 18 | 175 |
| Smithboro | Apr 10 | Apr 24 | Oct 24 | 197 |
| Smithfield | Apr 17 | May 2 | Oct 22 | 188 |
| Smithton | Apr 12 | Apr 28 | Oct 20 | 191 |
| Somonauk | Apr 28 | May 11 | Oct 13 | 168 |
| Sorento | Apr 13 | Apr 28 | Oct 24 | 194 |
| South Barrington | Apr 30 | May 16 | Oct 13 | 166 |
| South Beloit | May 1 | May 16 | Oct 12 | 164 |
| South Chicago Heights | Apr 23 | May 11 | Oct 20 | 180 |
| South Elgin | Apr 26 | May 12 | Oct 18 | 175 |
| South Holland | Apr 23 | May 11 | Oct 20 | 180 |
| South Jacksonville | Apr 19 | May 5 | Oct 17 | 181 |
| South Pekin | Apr 16 | May 4 | Oct 23 | 190 |
| South Roxana | Apr 4 | Apr 19 | Nov 5 | 215 |
| South Wilmington | Apr 27 | May 14 | Oct 15 | 171 |
| Southern View | Apr 15 | Apr 30 | Oct 22 | 190 |
| Sparland | Apr 20 | May 7 | Oct 17 | 180 |
| Sparta | Apr 12 | Apr 29 | Oct 22 | 193 |
| Spaulding | Apr 14 | Apr 29 | Oct 20 | 189 |
| Spillertown | Apr 9 | Apr 25 | Oct 22 | 196 |
| Spring Bay | Apr 16 | May 4 | Oct 23 | 190 |
| Spring Grove | Apr 23 | May 9 | Oct 21 | 181 |
| Spring Valley | Apr 24 | May 8 | Oct 18 | 177 |
| Springerton | Apr 11 | Apr 26 | Oct 21 | 193 |
| Springfield | Apr 15 | Apr 30 | Oct 22 | 190 |
| St. Anne | Apr 19 | May 3 | Oct 24 | 188 |
| St. Augustine | Apr 22 | May 8 | Oct 19 | 180 |
| St. Charles | Apr 25 | May 12 | Oct 19 | 177 |
| St. David | Apr 17 | May 3 | Oct 19 | 185 |
| St. Elmo | Apr 3 | Apr 25 | Oct 24 | 204 |
| St. Francisville | Apr 12 | Apr 30 | Oct 25 | 196 |
| St. Jacob | Apr 12 | Apr 28 | Oct 20 | 191 |
| St. Johns | Apr 6 | Apr 22 | Oct 22 | 199 |
| St. Joseph | Apr 20 | May 7 | Oct 21 | 184 |
| St. Libory | Apr 12 | Apr 28 | Oct 20 | 191 |
| St. Peter | Apr 3 | Apr 25 | Oct 24 | 204 |
| St. Rose | Apr 6 | Apr 22 | Oct 29 | 206 |
| Standard | Apr 24 | May 8 | Oct 18 | 177 |
| Standard City | Apr 7 | Apr 21 | Oct 29 | 205 |
| Stanford | Apr 21 | May 5 | Oct 20 | 182 |
| Staunton | Apr 14 | Apr 30 | Oct 21 | 190 |
| Ste. Marie | Apr 13 | Apr 27 | Oct 22 | 192 |
| Steeleville | Apr 12 | Apr 29 | Oct 22 | 193 |
| Steger | Apr 23 | May 11 | Oct 20 | 180 |
| Sterling | Apr 21 | May 5 | Oct 19 | 181 |
| Steward | Apr 26 | May 12 | Oct 13 | 170 |
| Stewardson | Apr 16 | Apr 29 | Oct 20 | 187 |
| Stickney | Apr 11 | Apr 27 | Oct 31 | 203 |
| Stillman Valley | Apr 24 | May 8 | Oct 17 | 176 |
| Stockton | Apr 27 | May 12 | Oct 9 | 165 |
| Stone Park | Apr 16 | May 1 | Oct 28 | 195 |
| Stonefort | Apr 7 | Apr 25 | Oct 26 | 202 |
| Stonington | Apr 14 | May 1 | Oct 24 | 193 |
| Stoy | Apr 13 | Apr 28 | Oct 22 | 192 |
| Strasburg | Apr 16 | Apr 30 | Oct 22 | 189 |
| Strawn | Apr 25 | May 10 | Oct 20 | 178 |
| Streamwood | Apr 30 | May 16 | Oct 13 | 166 |
| Streator | Apr 12 | Apr 25 | Oct 28 | 199 |
| Stronghurst | Apr 21 | May 5 | Oct 19 | 181 |
| Sublette | Apr 27 | May 14 | Oct 12 | 168 |
| Sugar Grove | Apr 28 | May 11 | Oct 13 | 168 |
| Sullivan | Apr 15 | Apr 30 | Oct 22 | 190 |
| Summerfield | Apr 12 | Apr 28 | Oct 20 | 191 |
| Summit | Apr 11 | Apr 27 | Oct 31 | 203 |
| Sumner | Apr 12 | Apr 30 | Oct 25 | 196 |
| Sun River Terrace | Apr 19 | May 3 | Oct 24 | 188 |
| Swansea | Apr 12 | Apr 28 | Oct 20 | 191 |
| Sycamore | Apr 24 | May 10 | Oct 18 | 177 |
| Symerton | Apr 16 | May 3 | Oct 26 | 193 |
| Table Grove | Apr 17 | May 2 | Oct 22 | 188 |
| Tallula | Apr 13 | Apr 28 | Oct 21 | 191 |
| Tamaroa | Apr 6 | Apr 22 | Oct 22 | 199 |
| Tamms | Apr 3 | Apr 21 | Nov 5 | 216 |
| Tampico | Apr 24 | May 9 | Oct 14 | 173 |
| Taylor Springs | Apr 13 | Apr 28 | Oct 24 | 194 |
| Taylorville | Apr 12 | Apr 27 | Oct 20 | 191 |
| Tennessee | Apr 21 | May 5 | Oct 19 | 181 |
| Teutopolis | Apr 13 | Apr 29 | Oct 24 | 194 |
| Thawville | Apr 25 | May 10 | Oct 20 | 178 |
| Thayer | Apr 7 | Apr 21 | Oct 29 | 205 |
| Thebes | Apr 5 | Apr 21 | Oct 25 | 203 |
| Third Lake | Apr 29 | May 15 | Oct 20 | 174 |
| Thomasboro | Apr 21 | May 6 | Oct 18 | 180 |
| Thompsonville | Apr 4 | Apr 21 | Oct 28 | 207 |
| Thomson | Apr 13 | Apr 28 | Oct 26 | 196 |
| Thornton | Apr 23 | May 11 | Oct 20 | 180 |
| Tilden | Apr 12 | Apr 29 | Oct 22 | 193 |
| Tilton | Apr 21 | May 7 | Oct 20 | 182 |
| Timberlane | May 1 | May 16 | Oct 12 | 164 |
| Tinley Park | Apr 23 | May 11 | Oct 20 | 180 |
| Tiskilwa | Apr 22 | May 7 | Oct 17 | 178 |
| Toledo | Apr 16 | Apr 29 | Oct 20 | 187 |
| Tolono | Apr 19 | May 5 | Oct 17 | 181 |
| Toluca | Apr 26 | May 10 | Oct 17 | 174 |
| Tonica | Apr 24 | May 8 | Oct 18 | 177 |
| Topeka | Apr 17 | May 3 | Oct 19 | 185 |
| Toulon | Apr 26 | May 11 | Oct 12 | 169 |
| Tovey | Apr 12 | Apr 27 | Oct 20 | 191 |
| Towanda | Apr 25 | May 11 | Oct 16 | 174 |
| Tower Hill | Apr 17 | May 3 | Oct 23 | 189 |
| Tower Lakes | Apr 29 | May 15 | Oct 20 | 174 |
| Tremont | Apr 21 | May 7 | Oct 17 | 179 |
| Trenton | Apr 12 | Apr 28 | Oct 20 | 191 |
| Trout Valley | Apr 25 | May 12 | Oct 19 | 177 |
| Troy | Apr 12 | Apr 28 | Oct 20 | 191 |
| Troy Grove | Apr 24 | May 8 | Oct 18 | 177 |
| Tuscola | Apr 15 | May 1 | Oct 20 | 188 |
| Ullin | Apr 3 | Apr 21 | Nov 5 | 216 |
| Union | Apr 28 | May 14 | Oct 12 | 167 |
| Union Hill | Apr 27 | May 14 | Oct 15 | 171 |
| University Park | Apr 23 | May 11 | Oct 20 | 180 |
| Urbana | Apr 15 | Apr 29 | Oct 24 | 192 |
| Ursa | Apr 11 | Apr 29 | Oct 23 | 195 |
| Valier | Apr 4 | Apr 19 | Oct 27 | 206 |
| Valley City | Apr 18 | May 5 | Oct 15 | 180 |
| Valmeyer | Apr 9 | Apr 25 | Oct 26 | 200 |
| Vandalia | Apr 10 | Apr 24 | Oct 24 | 197 |
| Varna | Apr 20 | May 7 | Oct 17 | 180 |
| Venedy | Apr 7 | Apr 22 | Oct 26 | 202 |
| Venice | Apr 1 | Apr 18 | Nov 4 | 217 |
| Vergennes | Apr 6 | Apr 22 | Oct 22 | 199 |
| Vermilion | Apr 21 | May 9 | Oct 20 | 182 |
| Vermont | Apr 16 | May 3 | Oct 23 | 190 |
| Vernon | Apr 10 | Apr 24 | Oct 24 | 197 |
| Vernon Hills | Apr 29 | May 15 | Oct 20 | 174 |
| Verona | Apr 27 | May 14 | Oct 15 | 171 |
| Versailles | Apr 18 | May 5 | Oct 15 | 180 |
| Victoria | Apr 28 | May 12 | Oct 12 | 167 |
| Vienna | Apr 14 | Apr 30 | Oct 21 | 190 |
| Villa Grove | Apr 15 | May 1 | Oct 20 | 188 |
| Villa Park | Apr 28 | May 14 | Oct 16 | 171 |
| Viola | Apr 22 | May 6 | Oct 19 | 180 |
| Virden | Apr 7 | Apr 21 | Oct 29 | 205 |
| Virgil | Apr 24 | May 10 | Oct 18 | 177 |
| Virginia | Apr 19 | May 5 | Oct 17 | 181 |
| Volo | Apr 24 | May 9 | Oct 23 | 182 |
| Wadsworth | Apr 30 | May 16 | Oct 21 | 174 |
| Waggoner | Apr 14 | Apr 30 | Oct 21 | 190 |
| Walnut | Apr 24 | May 9 | Oct 14 | 173 |
| Walnut Hill | Apr 9 | Apr 25 | Oct 24 | 198 |
| Walshville | Apr 13 | Apr 28 | Oct 24 | 194 |
| Waltonville | Apr 4 | Apr 19 | Oct 27 | 206 |
| Wamac | Apr 9 | Apr 25 | Oct 24 | 198 |
| Wapella | Apr 21 | May 5 | Oct 20 | 182 |
| Warren | Apr 27 | May 12 | Oct 9 | 165 |
| Warrensburg | Apr 14 | May 1 | Oct 24 | 193 |
| Warrenville | Apr 28 | May 14 | Oct 16 | 171 |
| Warsaw | Apr 10 | Apr 26 | Oct 27 | 200 |
| Washburn | Apr 20 | May 7 | Oct 17 | 180 |
| Washington | Apr 21 | May 7 | Oct 17 | 179 |
| Washington Park | Apr 8 | Apr 23 | Oct 26 | 201 |
| Wataga | Apr 20 | May 5 | Oct 19 | 182 |
| Waterloo | Apr 9 | Apr 25 | Oct 26 | 200 |
| Waterman | Apr 28 | May 13 | Oct 10 | 165 |
| Watseka | Apr 24 | May 10 | Oct 16 | 175 |
| Watson | Apr 13 | Apr 29 | Oct 24 | 194 |
| Wauconda | Apr 29 | May 15 | Oct 20 | 174 |
| Waukegan | Apr 30 | May 14 | Oct 19 | 172 |
| Waverly | Apr 7 | Apr 21 | Oct 29 | 205 |
| Wayne | Apr 25 | May 12 | Oct 19 | 177 |
| Wayne City | Apr 7 | Apr 23 | Oct 26 | 202 |
| Waynesville | Apr 20 | May 4 | Oct 16 | 179 |
| Weldon | Apr 16 | Apr 30 | Oct 22 | 189 |
| Wellington | Apr 22 | May 8 | Oct 19 | 180 |
| Wenona | Apr 26 | May 10 | Oct 17 | 174 |
| Wenonah | Apr 12 | Apr 27 | Oct 20 | 191 |
| West Brooklyn | Apr 27 | May 14 | Oct 12 | 168 |
| West Chicago | Apr 25 | May 12 | Oct 19 | 177 |
| West City | Apr 4 | Apr 21 | Oct 28 | 207 |
| West Dundee | Apr 26 | May 12 | Oct 18 | 175 |
| West Frankfort | Apr 4 | Apr 21 | Oct 28 | 207 |
| West Peoria | Apr 16 | May 4 | Oct 23 | 190 |
| West Point | Apr 13 | Apr 30 | Oct 22 | 192 |
| West Salem | Apr 15 | May 3 | Oct 23 | 191 |
| Westchester | Apr 11 | Apr 27 | Oct 31 | 203 |
| Western Springs | Apr 19 | May 5 | Oct 22 | 186 |
| Westfield | Apr 14 | Apr 30 | Oct 20 | 189 |
| Westmont | Apr 28 | May 14 | Oct 16 | 171 |
| Westville | Apr 21 | May 7 | Oct 20 | 182 |
| Wheaton | Apr 28 | May 14 | Oct 16 | 171 |
| Wheeler | Apr 13 | Apr 29 | Oct 22 | 192 |
| Wheeling | Apr 19 | May 3 | Oct 26 | 190 |
| White City | Apr 14 | Apr 30 | Oct 21 | 190 |
| White Hall | Apr 13 | Apr 28 | Oct 22 | 192 |
| Williamsfield | Apr 21 | May 6 | Oct 20 | 182 |
| Williamson | Apr 13 | Apr 28 | Oct 24 | 194 |
| Williamsville | Apr 14 | Apr 29 | Oct 20 | 189 |
| Willisville | Apr 12 | Apr 29 | Oct 22 | 193 |
| Willow Hill | Apr 13 | Apr 27 | Oct 22 | 192 |
| Willow Springs | Apr 19 | May 5 | Oct 22 | 186 |
| Willowbrook | Apr 19 | May 5 | Oct 22 | 186 |
| Wilmette | Apr 26 | May 11 | Oct 21 | 178 |
| Wilmington | Apr 16 | May 3 | Oct 26 | 193 |
| Wilsonville | Apr 14 | Apr 30 | Oct 21 | 190 |
| Winchester | Apr 18 | May 5 | Oct 20 | 185 |
| Windsor | Apr 16 | Apr 30 | Oct 22 | 189 |
| Winfield | Apr 25 | May 12 | Oct 19 | 177 |
| Winnebago | Apr 24 | May 8 | Oct 17 | 176 |
| Winnetka | Apr 26 | May 11 | Oct 21 | 178 |
| Winslow | Apr 27 | May 12 | Oct 9 | 165 |
| Winthrop Harbor | Apr 30 | May 16 | Oct 21 | 174 |
| Witt | Apr 13 | Apr 28 | Oct 24 | 194 |
| Wonder Lake | May 1 | May 19 | Oct 11 | 163 |
| Wood Dale | Apr 16 | May 1 | Oct 28 | 195 |
| Wood River | Apr 4 | Apr 19 | Nov 5 | 215 |
| Woodhull | Apr 28 | May 12 | Oct 12 | 167 |
| Woodland | Apr 24 | May 10 | Oct 16 | 175 |
| Woodlawn | Apr 9 | Apr 25 | Oct 24 | 198 |
| Woodridge | Apr 28 | May 14 | Oct 16 | 171 |
| Woodson | Apr 17 | May 1 | Oct 21 | 187 |
| Woodstock | Apr 25 | May 9 | Oct 22 | 180 |
| Worden | Apr 4 | Apr 19 | Nov 5 | 215 |
| Worth | Apr 10 | Apr 26 | Nov 1 | 205 |
| Wyanet | Apr 22 | May 7 | Oct 17 | 178 |
| Wyoming | Apr 22 | May 6 | Oct 14 | 175 |
| Xenia | Apr 10 | Apr 26 | Oct 23 | 196 |
| Yale | Apr 14 | Apr 30 | Oct 20 | 189 |
| Yates City | Apr 21 | May 6 | Oct 20 | 182 |
| Yorkville | Apr 28 | May 11 | Oct 13 | 168 |
| Zeigler | Apr 6 | Apr 22 | Oct 22 | 199 |
| Zion | Apr 30 | May 16 | Oct 21 | 174 |
Source: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. City centers from the US Census Bureau. Click a city for its nearest station and, where it has frost dates, hard-freeze dates and a vegetable planting calendar. See how we calculate.
Frequently asked questions
When is the last frost in Chicago, IL?
The average last spring frost in Chicago is April 10, and only 1 year in 10 has a frost after April 25. The average first fall frost is November 5. These come from NOAA's 1991–2020 records at the Chicago Northerly Is station.
When should I plant tomatoes in Illinois?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In Chicago that's about Apr 17 to Apr 24; for a 9 in 10 chance of no later frost, wait until Apr 25. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Illinois: Illinois climate zones (insulation) · Illinois planting zones · Frost line depth by state