Frost dates by state
Iowa Frost Dates
Across Iowa's 940 cities and towns, the average last spring frost runs from April 8 in Mediapolis to May 8 in Volga. Average last frost elsewhere: Des Moines Apr 18, Cedar Rapids Apr 28 and Davenport Apr 23.
Frost dates for every city and town in Iowa
Dates are for 32°F at the NOAA station nearest the ZIP code at each Iowa 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 |
|---|---|---|---|---|
| Ackley | Apr 28 | May 11 | Oct 10 | 165 |
| Ackworth | Apr 24 | May 8 | Oct 12 | 171 |
| Adair | May 2 | May 17 | Oct 3 | 154 |
| Adel | Apr 25 | May 8 | Oct 10 | 168 |
| Afton | Apr 28 | May 9 | Oct 11 | 166 |
| Agency | Apr 23 | May 7 | Oct 14 | 174 |
| Ainsworth | Apr 28 | May 11 | Oct 11 | 166 |
| Akron | May 1 | May 14 | Oct 4 | 156 |
| Albert City | Apr 30 | May 11 | Oct 5 | 158 |
| Albia | Apr 24 | May 9 | Oct 16 | 175 |
| Albion | Apr 30 | May 12 | Oct 6 | 159 |
| Alburnett | Apr 28 | May 13 | Oct 12 | 167 |
| Alden | Apr 28 | May 11 | Oct 10 | 165 |
| Alexander | Apr 29 | May 10 | Oct 9 | 163 |
| Algona | Apr 30 | May 11 | Oct 6 | 159 |
| Alleman | Apr 23 | May 6 | Oct 15 | 175 |
| Allerton | Apr 21 | May 6 | Oct 19 | 181 |
| Allison | Apr 27 | May 8 | Oct 8 | 164 |
| Alta | Apr 25 | May 7 | Oct 13 | 171 |
| Alta Vista | May 2 | May 14 | Oct 5 | 156 |
| Alton | Apr 30 | May 12 | Oct 3 | 156 |
| Altoona | Apr 21 | May 5 | Oct 15 | 177 |
| Alvord | May 1 | May 13 | Oct 4 | 156 |
| Ames | Apr 26 | May 9 | Oct 8 | 165 |
| Anamosa | May 1 | May 18 | Oct 4 | 156 |
| Andover | Apr 13 | Apr 28 | Oct 26 | 196 |
| Andrew | Apr 25 | May 9 | Oct 14 | 172 |
| Anita | Apr 30 | May 15 | Oct 2 | 155 |
| Ankeny | Apr 23 | May 6 | Oct 15 | 175 |
| Anthon | May 3 | May 16 | Oct 1 | 151 |
| Aplington | Apr 27 | May 8 | Oct 8 | 164 |
| Arcadia | Apr 27 | May 8 | Oct 10 | 166 |
| Archer | Apr 29 | May 11 | Oct 10 | 164 |
| Aredale | Apr 29 | May 10 | Oct 9 | 163 |
| Arion | Apr 27 | May 9 | Oct 11 | 167 |
| Arispe | Apr 28 | May 9 | Oct 11 | 166 |
| Arlington | Apr 27 | May 10 | Oct 13 | 169 |
| Armstrong | May 4 | May 14 | Oct 1 | 150 |
| Arnolds Park | May 1 | May 14 | Oct 6 | 158 |
| Arthur | Apr 27 | May 11 | Oct 12 | 168 |
| Asbury | Apr 19 | May 4 | Oct 21 | 185 |
| Ashton | May 5 | May 17 | Oct 3 | 151 |
| Aspinwall | Apr 27 | May 8 | Oct 10 | 166 |
| Atalissa | Apr 18 | May 2 | Oct 22 | 187 |
| Atkins | Apr 27 | May 11 | Oct 11 | 167 |
| Atlantic | Apr 30 | May 15 | Oct 2 | 155 |
| Auburn | Apr 30 | May 11 | Oct 6 | 159 |
| Audubon | May 2 | May 15 | Oct 3 | 154 |
| Aurelia | May 4 | May 17 | Oct 4 | 153 |
| Aurora | May 4 | May 15 | Oct 1 | 150 |
| Avoca | Apr 27 | May 9 | Oct 9 | 165 |
| Ayrshire | Apr 27 | May 9 | Oct 7 | 163 |
| Badger | Apr 28 | May 9 | Oct 8 | 163 |
| Bagley | Apr 26 | May 8 | Oct 9 | 166 |
| Baldwin | Apr 25 | May 9 | Oct 14 | 172 |
| Balltown | Apr 19 | May 4 | Oct 21 | 185 |
| Bancroft | May 4 | May 14 | Oct 1 | 150 |
| Bankston | Apr 28 | May 12 | Oct 10 | 165 |
| Barnes City | Apr 21 | May 4 | Oct 16 | 178 |
| Barnum | Apr 28 | May 9 | Oct 8 | 163 |
| Bassett | May 2 | May 14 | Oct 5 | 156 |
| Batavia | Apr 27 | May 14 | Oct 12 | 168 |
| Battle Creek | May 1 | May 15 | Oct 1 | 153 |
| Baxter | Apr 22 | May 4 | Oct 17 | 178 |
| Bayard | May 2 | May 17 | Oct 3 | 154 |
| Beacon | Apr 21 | May 4 | Oct 16 | 178 |
| Beaconsfield | Apr 23 | May 6 | Oct 17 | 177 |
| Beaman | Apr 30 | May 12 | Oct 6 | 159 |
| Beaver | Apr 28 | May 11 | Oct 12 | 167 |
| Bedford | Apr 24 | May 6 | Oct 15 | 174 |
| Belle Plaine | Apr 28 | May 11 | Oct 10 | 165 |
| Bellevue | Apr 25 | May 11 | Oct 16 | 174 |
| Belmond | Apr 30 | May 12 | Oct 10 | 163 |
| Bennett | Apr 27 | May 13 | Oct 10 | 166 |
| Benton | Apr 25 | May 9 | Oct 12 | 170 |
| Berkley | Apr 25 | May 8 | Oct 10 | 168 |
| Bernard | Apr 28 | May 12 | Oct 10 | 165 |
| Bertram | Apr 28 | May 13 | Oct 12 | 167 |
| Bettendorf | Apr 16 | Apr 30 | Oct 25 | 192 |
| Bevington | Apr 24 | May 8 | Oct 12 | 171 |
| Birmingham | Apr 26 | May 11 | Oct 13 | 170 |
| Blairsburg | May 3 | May 16 | Oct 2 | 152 |
| Blairstown | Apr 28 | May 11 | Oct 10 | 165 |
| Blakesburg | Apr 24 | May 9 | Oct 16 | 175 |
| Blanchard | Apr 25 | May 7 | Oct 11 | 169 |
| Blencoe | May 1 | May 12 | Oct 3 | 155 |
| Blockton | Apr 24 | May 7 | Oct 14 | 173 |
| Bloomfield | Apr 16 | Apr 30 | Oct 22 | 189 |
| Blue Grass | Apr 19 | May 4 | Oct 22 | 186 |
| Bode | Apr 30 | May 11 | Oct 6 | 159 |
| Bonaparte | Apr 26 | May 11 | Oct 13 | 170 |
| Bondurant | Apr 23 | May 6 | Oct 15 | 175 |
| Boone | Apr 28 | May 11 | Oct 12 | 167 |
| Bouton | Apr 25 | May 8 | Oct 10 | 168 |
| Boxholm | Apr 28 | May 11 | Oct 12 | 167 |
| Boyden | May 5 | May 18 | Sep 28 | 146 |
| Braddyville | Apr 25 | May 7 | Oct 11 | 169 |
| Bradgate | Apr 27 | May 7 | Oct 9 | 165 |
| Brandon | May 3 | May 17 | Oct 3 | 153 |
| Brayton | Apr 30 | May 15 | Oct 2 | 155 |
| Breda | Apr 27 | May 8 | Oct 10 | 166 |
| Bridgewater | Apr 25 | May 7 | Oct 12 | 170 |
| Brighton | Apr 28 | May 11 | Oct 11 | 166 |
| Bristow | Apr 27 | May 8 | Oct 8 | 164 |
| Britt | Apr 29 | May 10 | Oct 7 | 161 |
| Bronson | Apr 29 | May 11 | Oct 7 | 161 |
| Brooklyn | Apr 28 | May 11 | Oct 10 | 165 |
| Brunsville | Apr 30 | May 12 | Oct 4 | 157 |
| Buck Grove | Apr 27 | May 9 | Oct 11 | 167 |
| Buckeye | Apr 28 | May 11 | Oct 10 | 165 |
| Buffalo | Apr 19 | May 4 | Oct 22 | 186 |
| Buffalo Center | Apr 30 | May 10 | Oct 7 | 160 |
| Burlington | Apr 15 | May 1 | Oct 20 | 188 |
| Burt | Apr 30 | May 11 | Oct 6 | 159 |
| Bussey | Apr 24 | May 9 | Oct 16 | 175 |
| Calamus | Apr 27 | May 13 | Oct 10 | 166 |
| Callender | Apr 28 | May 9 | Oct 8 | 163 |
| Calmar | May 3 | May 16 | Oct 7 | 157 |
| Calumet | Apr 29 | May 11 | Oct 10 | 164 |
| Camanche | Apr 22 | May 8 | Oct 16 | 177 |
| Cambridge | Apr 26 | May 8 | Oct 12 | 169 |
| Cantril | Apr 26 | May 11 | Oct 13 | 170 |
| Carbon | Apr 27 | May 11 | Oct 12 | 168 |
| Carlisle | Apr 18 | May 2 | Oct 20 | 185 |
| Carpenter | May 4 | May 16 | Oct 4 | 153 |
| Carroll | Apr 27 | May 8 | Oct 10 | 166 |
| Carson | Apr 23 | May 5 | Oct 14 | 174 |
| Carter Lake | Apr 18 | Apr 30 | Oct 21 | 186 |
| Cascade | Apr 28 | May 12 | Oct 10 | 165 |
| Casey | May 2 | May 17 | Oct 3 | 154 |
| Castalia | May 1 | May 14 | Oct 3 | 155 |
| Castana | Apr 25 | May 7 | Oct 12 | 170 |
| Cedar Falls | Apr 27 | May 10 | Oct 10 | 166 |
| Cedar Rapids | Apr 28 | May 13 | Oct 12 | 167 |
| Center Point | May 3 | May 17 | Oct 3 | 153 |
| Centerville | Apr 28 | May 11 | Oct 14 | 169 |
| Central City | May 3 | May 17 | Oct 7 | 157 |
| Centralia | Apr 28 | May 12 | Oct 11 | 166 |
| Chariton | May 5 | May 19 | Oct 5 | 153 |
| Charles City | Apr 30 | May 14 | Oct 6 | 159 |
| Charlotte | Apr 25 | May 9 | Oct 14 | 172 |
| Charter Oak | May 3 | May 16 | Oct 1 | 151 |
| Chatsworth | May 1 | May 14 | Oct 4 | 156 |
| Chelsea | Apr 28 | May 11 | Oct 10 | 165 |
| Cherokee | May 4 | May 17 | Oct 4 | 153 |
| Chester | May 8 | May 21 | Oct 1 | 146 |
| Chillicothe | Apr 23 | May 7 | Oct 14 | 174 |
| Churdan | Apr 26 | May 8 | Oct 9 | 166 |
| Cincinnati | Apr 28 | May 11 | Oct 14 | 169 |
| Clare | Apr 28 | May 9 | Oct 8 | 163 |
| Clarence | Apr 27 | May 13 | Oct 10 | 166 |
| Clarinda | Apr 25 | May 7 | Oct 11 | 169 |
| Clarion | Apr 30 | May 12 | Oct 10 | 163 |
| Clarksville | Apr 27 | May 8 | Oct 8 | 164 |
| Clayton | Apr 21 | May 6 | Oct 18 | 180 |
| Clear Lake | May 3 | May 15 | Oct 1 | 151 |
| Clearfield | Apr 25 | May 9 | Oct 12 | 170 |
| Cleghorn | May 4 | May 17 | Oct 4 | 153 |
| Clemons | Apr 30 | May 12 | Oct 6 | 159 |
| Clermont | May 1 | May 14 | Oct 3 | 155 |
| Clinton | Apr 13 | Apr 28 | Oct 26 | 196 |
| Clio | Apr 21 | May 6 | Oct 19 | 181 |
| Clive | Apr 18 | May 2 | Oct 20 | 185 |
| Clutier | Apr 30 | May 11 | Oct 9 | 162 |
| Coburg | Apr 20 | May 3 | Oct 17 | 180 |
| Coggon | May 3 | May 17 | Oct 7 | 157 |
| Coin | Apr 20 | May 3 | Oct 17 | 180 |
| Colesburg | Apr 21 | May 6 | Oct 18 | 180 |
| Colfax | Apr 21 | May 5 | Oct 15 | 177 |
| College Springs | Apr 25 | May 7 | Oct 11 | 169 |
| Collins | Apr 24 | May 7 | Oct 12 | 171 |
| Colo | Apr 24 | May 7 | Oct 12 | 171 |
| Columbus City | Apr 26 | May 11 | Oct 10 | 167 |
| Columbus Junction | Apr 26 | May 11 | Oct 10 | 167 |
| Colwell | Apr 30 | May 14 | Oct 6 | 159 |
| Conesville | Apr 26 | May 11 | Oct 10 | 167 |
| Conrad | Apr 30 | May 12 | Oct 6 | 159 |
| Conway | Apr 24 | May 6 | Oct 15 | 174 |
| Coon Rapids | May 2 | May 15 | Oct 3 | 154 |
| Coppock | Apr 28 | May 11 | Oct 11 | 166 |
| Coralville | Apr 21 | May 6 | Oct 18 | 180 |
| Corning | Apr 27 | May 11 | Oct 12 | 168 |
| Correctionville | Apr 30 | May 11 | Oct 9 | 162 |
| Corwith | Apr 29 | May 10 | Oct 7 | 161 |
| Corydon | Apr 21 | May 6 | Oct 19 | 181 |
| Cotter | Apr 26 | May 11 | Oct 10 | 167 |
| Coulter | Apr 29 | May 10 | Oct 9 | 163 |
| Council Bluffs | Apr 18 | Apr 30 | Oct 21 | 186 |
| Craig | May 1 | May 14 | Oct 4 | 156 |
| Crawfordsville | Apr 26 | May 11 | Oct 10 | 167 |
| Crescent | Apr 18 | Apr 30 | Oct 21 | 186 |
| Cresco | May 8 | May 21 | Oct 1 | 146 |
| Creston | Apr 28 | May 9 | Oct 11 | 166 |
| Cromwell | Apr 28 | May 9 | Oct 11 | 166 |
| Crystal Lake | Apr 29 | May 10 | Oct 7 | 161 |
| Cumberland | Apr 30 | May 15 | Oct 2 | 155 |
| Cumming | Apr 18 | May 2 | Oct 20 | 185 |
| Curlew | Apr 27 | May 9 | Oct 7 | 163 |
| Cushing | Apr 30 | May 11 | Oct 9 | 162 |
| Cylinder | Apr 27 | May 9 | Oct 7 | 163 |
| Dakota City | Apr 26 | May 7 | Oct 12 | 169 |
| Dallas Center | Apr 19 | May 3 | Oct 18 | 182 |
| Dana | Apr 26 | May 8 | Oct 9 | 166 |
| Danbury | May 3 | May 16 | Oct 1 | 151 |
| Danville | Apr 15 | May 1 | Oct 20 | 188 |
| Davenport | Apr 23 | May 8 | Oct 15 | 175 |
| Davis City | Apr 16 | May 2 | Oct 21 | 188 |
| Dawson | Apr 25 | May 8 | Oct 10 | 168 |
| Dayton | Apr 28 | May 11 | Oct 12 | 167 |
| De Soto | Apr 30 | May 11 | Oct 3 | 156 |
| Decatur | Apr 16 | May 2 | Oct 21 | 188 |
| Decorah | May 3 | May 16 | Oct 7 | 157 |
| Dedham | Apr 27 | May 8 | Oct 10 | 166 |
| Deep River | Apr 24 | May 9 | Oct 15 | 174 |
| Defiance | Apr 27 | May 9 | Oct 9 | 165 |
| Delaware | May 3 | May 16 | Oct 4 | 154 |
| Delhi | May 3 | May 16 | Oct 4 | 154 |
| Delmar | Apr 25 | May 9 | Oct 14 | 172 |
| Deloit | Apr 27 | May 9 | Oct 11 | 167 |
| Delta | Apr 24 | May 9 | Oct 15 | 174 |
| Denison | Apr 27 | May 9 | Oct 11 | 167 |
| Denver | Apr 27 | May 10 | Oct 10 | 166 |
| Derby | May 5 | May 19 | Oct 5 | 153 |
| Des Moines | Apr 18 | May 2 | Oct 20 | 185 |
| DeWitt | Apr 22 | May 8 | Oct 16 | 177 |
| Dexter | Apr 30 | May 11 | Oct 3 | 156 |
| Diagonal | Apr 25 | May 9 | Oct 12 | 170 |
| Dickens | May 1 | May 14 | Oct 3 | 155 |
| Dike | Apr 29 | May 12 | Oct 9 | 163 |
| Dixon | Apr 23 | May 8 | Oct 15 | 175 |
| Dolliver | May 2 | May 14 | Sep 30 | 151 |
| Donahue | Apr 23 | May 8 | Oct 15 | 175 |
| Donnellson | Apr 17 | May 1 | Oct 22 | 188 |
| Doon | May 1 | May 13 | Oct 4 | 156 |
| Dougherty | Apr 29 | May 10 | Oct 9 | 163 |
| Dow City | Apr 27 | May 9 | Oct 11 | 167 |
| Dows | Apr 30 | May 12 | Oct 10 | 163 |
| Drakesville | Apr 16 | Apr 30 | Oct 22 | 189 |
| Dubuque | Apr 19 | May 4 | Oct 21 | 185 |
| Dumont | Apr 27 | May 8 | Oct 8 | 164 |
| Duncombe | May 3 | May 16 | Oct 2 | 152 |
| Dundee | May 3 | May 16 | Oct 4 | 154 |
| Dunkerton | Apr 27 | May 10 | Oct 10 | 166 |
| Dunlap | Apr 29 | May 13 | Oct 8 | 162 |
| Durango | Apr 19 | May 4 | Oct 21 | 185 |
| Durant | Apr 18 | May 2 | Oct 22 | 187 |
| Dyersville | Apr 28 | May 12 | Oct 10 | 165 |
| Dysart | May 3 | May 17 | Oct 3 | 153 |
| Eagle Grove | Apr 30 | May 12 | Oct 10 | 163 |
| Earlham | Apr 30 | May 11 | Oct 3 | 156 |
| Earling | Apr 27 | May 9 | Oct 9 | 165 |
| Earlville | May 3 | May 16 | Oct 4 | 154 |
| Early | Apr 30 | May 11 | Oct 6 | 159 |
| East Peru | Apr 30 | May 11 | Oct 3 | 156 |
| Eddyville | Apr 24 | May 9 | Oct 16 | 175 |
| Edgewood | May 8 | May 22 | Oct 1 | 146 |
| Elberon | Apr 28 | May 11 | Oct 10 | 165 |
| Eldon | Apr 27 | May 14 | Oct 12 | 168 |
| Eldora | Apr 27 | May 8 | Oct 10 | 166 |
| Eldridge | Apr 21 | May 7 | Oct 17 | 179 |
| Elgin | May 4 | May 17 | Oct 4 | 153 |
| Elk Horn | May 2 | May 15 | Oct 3 | 154 |
| Elk Run Heights | Apr 27 | May 10 | Oct 10 | 166 |
| Elkader | May 8 | May 22 | Oct 1 | 146 |
| Elkhart | Apr 23 | May 6 | Oct 15 | 175 |
| Elkport | Apr 21 | May 6 | Oct 18 | 180 |
| Elliott | Apr 24 | May 8 | Oct 13 | 172 |
| Ellston | Apr 23 | May 6 | Oct 17 | 177 |
| Ellsworth | May 3 | May 16 | Oct 2 | 152 |
| Elma | May 2 | May 14 | Oct 5 | 156 |
| Ely | Apr 27 | May 11 | Oct 11 | 167 |
| Emerson | Apr 24 | May 8 | Oct 13 | 172 |
| Emmetsburg | Apr 27 | May 9 | Oct 7 | 163 |
| Epworth | Apr 28 | May 12 | Oct 10 | 165 |
| Essex | Apr 20 | May 3 | Oct 17 | 180 |
| Estherville | May 2 | May 14 | Oct 3 | 154 |
| Evansdale | Apr 27 | May 10 | Oct 10 | 166 |
| Everly | May 2 | May 15 | Oct 2 | 153 |
| Exira | May 2 | May 15 | Oct 3 | 154 |
| Exline | Apr 28 | May 11 | Oct 14 | 169 |
| Fairbank | Apr 30 | May 13 | Oct 9 | 162 |
| Fairfax | Apr 27 | May 11 | Oct 11 | 167 |
| Fairfield | Apr 27 | May 14 | Oct 12 | 168 |
| Farley | Apr 28 | May 12 | Oct 10 | 165 |
| Farmersburg | Apr 28 | May 11 | Oct 12 | 167 |
| Farmington | Apr 17 | May 1 | Oct 22 | 188 |
| Farnhamville | Apr 26 | May 6 | Oct 10 | 167 |
| Farragut | Apr 20 | May 3 | Oct 17 | 180 |
| Fayette | May 4 | May 17 | Oct 4 | 153 |
| Fenton | Apr 30 | May 11 | Oct 6 | 159 |
| Ferguson | Apr 28 | May 11 | Oct 7 | 162 |
| Fertile | Apr 30 | May 10 | Oct 7 | 160 |
| Floris | Apr 16 | Apr 30 | Oct 22 | 189 |
| Floyd | Apr 30 | May 14 | Oct 6 | 159 |
| Fonda | Apr 26 | May 8 | Oct 7 | 164 |
| Fontanelle | Apr 25 | May 7 | Oct 12 | 170 |
| Forest City | Apr 30 | May 10 | Oct 7 | 160 |
| Fort Atkinson | May 3 | May 16 | Oct 7 | 157 |
| Fort Dodge | Apr 28 | May 9 | Oct 8 | 163 |
| Fort Madison | Apr 12 | Apr 26 | Oct 25 | 196 |
| Fostoria | May 1 | May 14 | Oct 6 | 158 |
| Franklin | Apr 17 | May 1 | Oct 22 | 188 |
| Fraser | Apr 28 | May 11 | Oct 12 | 167 |
| Fredericksburg | May 2 | May 14 | Oct 5 | 156 |
| Frederika | Apr 29 | May 9 | Oct 9 | 163 |
| Fredonia | Apr 26 | May 11 | Oct 10 | 167 |
| Fremont | Apr 23 | May 7 | Oct 14 | 174 |
| Fruitland | Apr 24 | May 9 | Oct 14 | 173 |
| Galt | Apr 30 | May 12 | Oct 10 | 163 |
| Galva | Apr 30 | May 11 | Oct 9 | 162 |
| Garber | Apr 21 | May 6 | Oct 18 | 180 |
| Garden Grove | Apr 30 | May 15 | Oct 8 | 161 |
| Garnavillo | Apr 21 | May 6 | Oct 18 | 180 |
| Garner | Apr 29 | May 10 | Oct 7 | 161 |
| Garrison | May 3 | May 17 | Oct 3 | 153 |
| Garwin | Apr 30 | May 11 | Oct 9 | 162 |
| Geneva | Apr 29 | May 10 | Oct 9 | 163 |
| George | May 1 | May 13 | Oct 4 | 156 |
| Gibson | Apr 24 | May 9 | Oct 15 | 174 |
| Gilbert | Apr 26 | May 9 | Oct 8 | 165 |
| Gilbertville | Apr 27 | May 10 | Oct 10 | 166 |
| Gillett Grove | Apr 30 | May 11 | Oct 5 | 158 |
| Gilman | May 3 | May 17 | Oct 6 | 156 |
| Gilmore City | Apr 26 | May 8 | Oct 7 | 164 |
| Gladbrook | Apr 29 | May 12 | Oct 9 | 163 |
| Glenwood | Apr 23 | May 6 | Oct 11 | 171 |
| Glidden | Apr 27 | May 8 | Oct 10 | 166 |
| Goldfield | Apr 30 | May 12 | Oct 10 | 163 |
| Goodell | Apr 29 | May 10 | Oct 7 | 161 |
| Goose Lake | Apr 22 | May 8 | Oct 16 | 177 |
| Gowrie | Apr 26 | May 6 | Oct 10 | 167 |
| Graettinger | Apr 27 | May 9 | Oct 7 | 163 |
| Graf | Apr 19 | May 4 | Oct 21 | 185 |
| Grafton | May 4 | May 16 | Oct 4 | 153 |
| Grand Junction | Apr 26 | May 8 | Oct 9 | 166 |
| Grand Mound | Apr 27 | May 13 | Oct 10 | 166 |
| Grand River | Apr 23 | May 6 | Oct 17 | 177 |
| Grandview | Apr 26 | May 11 | Oct 10 | 167 |
| Granger | Apr 19 | May 3 | Oct 18 | 182 |
| Grant | Apr 27 | May 11 | Oct 12 | 168 |
| Granville | Apr 29 | May 11 | Oct 10 | 164 |
| Gravity | Apr 24 | May 6 | Oct 15 | 174 |
| Gray | Apr 27 | May 8 | Oct 10 | 166 |
| Greeley | May 3 | May 16 | Oct 4 | 154 |
| Greene | Apr 27 | May 8 | Oct 8 | 164 |
| Greenfield | Apr 25 | May 7 | Oct 12 | 170 |
| Greenville | Apr 30 | May 11 | Oct 5 | 158 |
| Grimes | Apr 19 | May 3 | Oct 18 | 182 |
| Grinnell | May 3 | May 17 | Oct 6 | 156 |
| Griswold | Apr 23 | May 5 | Oct 14 | 174 |
| Grundy Center | Apr 29 | May 12 | Oct 9 | 163 |
| Gruver | May 2 | May 14 | Oct 3 | 154 |
| Guernsey | Apr 28 | May 11 | Oct 10 | 165 |
| Guthrie Center | May 2 | May 17 | Oct 3 | 154 |
| Guttenberg | Apr 21 | May 6 | Oct 18 | 180 |
| Halbur | Apr 27 | May 8 | Oct 10 | 166 |
| Hamburg | Apr 19 | May 2 | Oct 19 | 183 |
| Hamilton | Apr 24 | May 9 | Oct 16 | 175 |
| Hampton | Apr 29 | May 10 | Oct 9 | 163 |
| Hancock | Apr 23 | May 5 | Oct 14 | 174 |
| Hanlontown | May 3 | May 15 | Oct 1 | 151 |
| Hansell | Apr 27 | May 8 | Oct 8 | 164 |
| Harcourt | Apr 26 | May 8 | Oct 9 | 166 |
| Hardy | Apr 26 | May 7 | Oct 12 | 169 |
| Harlan | Apr 27 | May 9 | Oct 9 | 165 |
| Harper | Apr 24 | May 9 | Oct 15 | 174 |
| Harpers Ferry | Apr 24 | May 8 | Oct 17 | 176 |
| Harris | Apr 30 | May 11 | Oct 10 | 163 |
| Hartford | Apr 21 | May 5 | Oct 15 | 177 |
| Hartley | May 1 | May 13 | Oct 7 | 159 |
| Hartwick | Apr 28 | May 11 | Oct 10 | 165 |
| Harvey | Apr 20 | May 4 | Oct 19 | 182 |
| Hastings | Apr 24 | May 8 | Oct 13 | 172 |
| Havelock | Apr 26 | May 8 | Oct 7 | 164 |
| Haverhill | Apr 28 | May 11 | Oct 7 | 162 |
| Hawarden | May 1 | May 14 | Oct 4 | 156 |
| Hawkeye | May 4 | May 17 | Oct 4 | 153 |
| Hayesville | Apr 24 | May 9 | Oct 15 | 174 |
| Hazleton | Apr 30 | May 13 | Oct 9 | 162 |
| Hedrick | Apr 23 | May 7 | Oct 14 | 174 |
| Henderson | Apr 23 | May 5 | Oct 14 | 174 |
| Hiawatha | Apr 28 | May 13 | Oct 12 | 167 |
| Hills | Apr 29 | May 14 | Oct 9 | 163 |
| Hillsboro | Apr 30 | May 14 | Oct 10 | 163 |
| Hinton | Apr 30 | May 12 | Oct 4 | 157 |
| Holland | Apr 29 | May 12 | Oct 9 | 163 |
| Holstein | Apr 30 | May 11 | Oct 9 | 162 |
| Holy Cross | Apr 21 | May 6 | Oct 18 | 180 |
| Hopkinton | Apr 28 | May 12 | Oct 10 | 165 |
| Hornick | May 1 | May 13 | Oct 3 | 155 |
| Hospers | May 5 | May 18 | Sep 28 | 146 |
| Houghton | Apr 30 | May 14 | Oct 10 | 163 |
| Hubbard | Apr 27 | May 8 | Oct 10 | 166 |
| Hudson | Apr 27 | May 10 | Oct 10 | 166 |
| Hull | Apr 30 | May 12 | Oct 3 | 156 |
| Humboldt | Apr 27 | May 7 | Oct 9 | 165 |
| Humeston | Apr 30 | May 15 | Oct 8 | 161 |
| Huxley | Apr 26 | May 8 | Oct 12 | 169 |
| Ida Grove | Apr 27 | May 11 | Oct 12 | 168 |
| Imogene | Apr 20 | May 3 | Oct 17 | 180 |
| Independence | Apr 30 | May 12 | Oct 7 | 160 |
| Indianola | Apr 24 | May 8 | Oct 12 | 171 |
| Inwood | May 2 | May 15 | Oct 2 | 153 |
| Ionia | May 2 | May 14 | Oct 5 | 156 |
| Iowa City | Apr 21 | May 6 | Oct 18 | 180 |
| Iowa Falls | Apr 28 | May 11 | Oct 10 | 165 |
| Ireton | May 1 | May 14 | Oct 4 | 156 |
| Irwin | Apr 27 | May 9 | Oct 9 | 165 |
| Jackson Junction | May 2 | May 14 | Oct 5 | 156 |
| Jamaica | Apr 25 | May 8 | Oct 10 | 168 |
| Janesville | Apr 27 | May 10 | Oct 10 | 166 |
| Jefferson | Apr 26 | May 8 | Oct 9 | 166 |
| Jesup | Apr 30 | May 12 | Oct 7 | 160 |
| Jewell Junction | May 3 | May 16 | Oct 2 | 152 |
| Johnston | Apr 19 | May 3 | Oct 18 | 182 |
| Joice | Apr 30 | May 10 | Oct 7 | 160 |
| Jolley | Apr 26 | May 6 | Oct 10 | 167 |
| Kalona | Apr 21 | May 6 | Oct 18 | 180 |
| Kamrar | May 3 | May 16 | Oct 2 | 152 |
| Kanawha | Apr 29 | May 10 | Oct 7 | 161 |
| Kellerton | Apr 16 | May 2 | Oct 20 | 187 |
| Kelley | Apr 26 | May 9 | Oct 8 | 165 |
| Kellogg | May 3 | May 17 | Oct 6 | 156 |
| Kensett | May 4 | May 16 | Oct 4 | 153 |
| Keokuk | Apr 10 | Apr 26 | Oct 27 | 200 |
| Keomah Village | Apr 21 | May 4 | Oct 16 | 178 |
| Keosauqua | Apr 26 | May 11 | Oct 13 | 170 |
| Keota | Apr 28 | May 11 | Oct 11 | 166 |
| Keswick | Apr 24 | May 9 | Oct 15 | 174 |
| Keystone | Apr 28 | May 11 | Oct 10 | 165 |
| Kimballton | May 2 | May 15 | Oct 3 | 154 |
| Kingsley | Apr 30 | May 12 | Oct 4 | 157 |
| Kinross | Apr 24 | May 9 | Oct 15 | 174 |
| Kirkman | Apr 27 | May 9 | Oct 9 | 165 |
| Kirkville | Apr 23 | May 7 | Oct 14 | 174 |
| Kiron | Apr 27 | May 9 | Oct 11 | 167 |
| Klemme | Apr 29 | May 10 | Oct 7 | 161 |
| Knierim | Apr 26 | May 6 | Oct 10 | 167 |
| Knoxville | Apr 20 | May 4 | Oct 19 | 182 |
| La Motte | Apr 28 | May 12 | Oct 11 | 166 |
| La Porte City | May 3 | May 17 | Oct 3 | 153 |
| Lacona | May 5 | May 19 | Oct 5 | 153 |
| Ladora | Apr 28 | May 12 | Oct 9 | 164 |
| Lake City | Apr 26 | May 6 | Oct 10 | 167 |
| Lake Mills | Apr 30 | May 10 | Oct 7 | 160 |
| Lake Park | Apr 30 | May 11 | Oct 10 | 163 |
| Lake View | Apr 30 | May 11 | Oct 6 | 159 |
| Lakeside | Apr 25 | May 7 | Oct 13 | 171 |
| Lakota | May 4 | May 14 | Oct 1 | 150 |
| Lambs Grove | Apr 22 | May 4 | Oct 17 | 178 |
| Lamoni | Apr 16 | May 2 | Oct 20 | 187 |
| Lamont | May 4 | May 15 | Oct 1 | 150 |
| Lanesboro | Apr 27 | May 8 | Oct 10 | 166 |
| Lansing | May 2 | May 16 | Oct 11 | 162 |
| Larchwood | May 2 | May 15 | Oct 2 | 153 |
| Larrabee | May 4 | May 17 | Oct 4 | 153 |
| Latimer | Apr 29 | May 10 | Oct 9 | 163 |
| Laurel | Apr 22 | May 4 | Oct 17 | 178 |
| Laurens | Apr 30 | May 11 | Oct 5 | 158 |
| Lawler | May 2 | May 14 | Oct 5 | 156 |
| Lawton | Apr 29 | May 11 | Oct 7 | 161 |
| Le Claire | Apr 16 | Apr 30 | Oct 25 | 192 |
| Le Grand | Apr 28 | May 11 | Oct 7 | 162 |
| Le Mars | Apr 30 | May 12 | Oct 4 | 157 |
| Le Roy | Apr 30 | May 15 | Oct 8 | 161 |
| Ledyard | May 4 | May 14 | Oct 1 | 150 |
| Lehigh | May 3 | May 16 | Oct 2 | 152 |
| Leighton | Apr 21 | May 4 | Oct 16 | 178 |
| Leland | Apr 30 | May 10 | Oct 7 | 160 |
| Lenox | Apr 28 | May 9 | Oct 11 | 166 |
| Leon | Apr 30 | May 15 | Oct 8 | 161 |
| Lester | May 1 | May 13 | Oct 4 | 156 |
| Letts | Apr 26 | May 11 | Oct 10 | 167 |
| Lewis | Apr 30 | May 15 | Oct 2 | 155 |
| Libertyville | Apr 27 | May 14 | Oct 12 | 168 |
| Lidderdale | Apr 27 | May 8 | Oct 10 | 166 |
| Lime Springs | May 8 | May 21 | Oct 1 | 146 |
| Lincoln | Apr 29 | May 12 | Oct 9 | 163 |
| Linden | Apr 25 | May 8 | Oct 10 | 168 |
| Lineville | Apr 30 | May 15 | Oct 8 | 161 |
| Linn Grove | Apr 30 | May 11 | Oct 5 | 158 |
| Lisbon | Apr 27 | May 10 | Oct 13 | 169 |
| Liscomb | Apr 30 | May 12 | Oct 6 | 159 |
| Little Rock | May 5 | May 17 | Oct 3 | 151 |
| Little Sioux | May 1 | May 12 | Oct 3 | 155 |
| Livermore | Apr 26 | May 7 | Oct 12 | 169 |
| Lockridge | Apr 27 | May 14 | Oct 12 | 168 |
| Logan | Apr 29 | May 13 | Oct 8 | 162 |
| Lohrville | Apr 26 | May 6 | Oct 10 | 167 |
| Lone Rock | Apr 30 | May 11 | Oct 6 | 159 |
| Lone Tree | Apr 29 | May 14 | Oct 9 | 163 |
| Long Grove | Apr 21 | May 7 | Oct 17 | 179 |
| Lorimor | Apr 30 | May 11 | Oct 3 | 156 |
| Lost Nation | Apr 27 | May 13 | Oct 10 | 166 |
| Lovilia | Apr 24 | May 9 | Oct 16 | 175 |
| Low Moor | Apr 22 | May 8 | Oct 16 | 177 |
| Lowden | Apr 27 | May 13 | Oct 10 | 166 |
| Lu Verne | Apr 30 | May 11 | Oct 6 | 159 |
| Luana | May 1 | May 14 | Oct 3 | 155 |
| Lucas | Apr 29 | May 11 | Oct 9 | 163 |
| Luther | Apr 23 | May 5 | Oct 14 | 174 |
| Luxemburg | Apr 21 | May 6 | Oct 18 | 180 |
| Luzerne | Apr 28 | May 11 | Oct 10 | 165 |
| Lynnville | May 3 | May 17 | Oct 6 | 156 |
| Lytton | Apr 30 | May 11 | Oct 6 | 159 |
| Macedonia | Apr 23 | May 5 | Oct 14 | 174 |
| Macksburg | Apr 30 | May 11 | Oct 3 | 156 |
| Madrid | Apr 23 | May 5 | Oct 14 | 174 |
| Magnolia | Apr 29 | May 13 | Oct 8 | 162 |
| Maharishi Vedic City | Apr 27 | May 14 | Oct 12 | 168 |
| Malcom | May 3 | May 17 | Oct 6 | 156 |
| Mallard | Apr 27 | May 9 | Oct 7 | 163 |
| Maloy | Apr 25 | May 9 | Oct 12 | 170 |
| Malvern | Apr 23 | May 6 | Oct 11 | 171 |
| Manchester | May 3 | May 16 | Oct 4 | 154 |
| Manilla | Apr 27 | May 9 | Oct 11 | 167 |
| Manly | Apr 29 | May 9 | Oct 7 | 161 |
| Manning | Apr 27 | May 8 | Oct 10 | 166 |
| Manson | Apr 26 | May 6 | Oct 10 | 167 |
| Mapleton | May 3 | May 16 | Oct 1 | 151 |
| Maquoketa | Apr 25 | May 9 | Oct 14 | 172 |
| Marathon | Apr 30 | May 11 | Oct 5 | 158 |
| Marble Rock | Apr 30 | May 14 | Oct 6 | 159 |
| Marcus | May 4 | May 17 | Oct 4 | 153 |
| Marengo | Apr 28 | May 12 | Oct 9 | 164 |
| Marion | Apr 28 | May 13 | Oct 12 | 167 |
| Marne | Apr 30 | May 15 | Oct 2 | 155 |
| Marquette | Apr 28 | May 11 | Oct 12 | 167 |
| Marshalltown | Apr 28 | May 11 | Oct 7 | 162 |
| Martelle | Apr 27 | May 10 | Oct 13 | 169 |
| Martensdale | Apr 24 | May 8 | Oct 12 | 171 |
| Martinsburg | Apr 23 | May 7 | Oct 14 | 174 |
| Marysville | Apr 20 | May 4 | Oct 19 | 182 |
| Mason City | Apr 29 | May 9 | Oct 7 | 161 |
| Masonville | May 3 | May 16 | Oct 4 | 154 |
| Massena | Apr 27 | May 11 | Oct 12 | 168 |
| Matlock | May 5 | May 18 | Sep 28 | 146 |
| Maurice | Apr 30 | May 12 | Oct 3 | 156 |
| Maxwell | Apr 26 | May 8 | Oct 12 | 169 |
| Maynard | Apr 27 | May 10 | Oct 13 | 169 |
| Maysville | Apr 23 | May 8 | Oct 15 | 175 |
| McCallsburg | Apr 24 | May 7 | Oct 12 | 171 |
| McCausland | Apr 22 | May 8 | Oct 16 | 177 |
| McClelland | Apr 23 | May 5 | Oct 14 | 174 |
| McGregor | Apr 28 | May 11 | Oct 12 | 167 |
| McIntire | Apr 30 | May 12 | Oct 9 | 162 |
| Mechanicsville | Apr 21 | May 4 | Oct 15 | 177 |
| Mediapolis | Apr 8 | Apr 23 | Oct 29 | 204 |
| Melbourne | Apr 28 | May 11 | Oct 7 | 162 |
| Melcher-Dallas | Apr 20 | May 4 | Oct 19 | 182 |
| Melrose | May 5 | May 19 | Oct 5 | 153 |
| Melvin | May 1 | May 13 | Oct 7 | 159 |
| Menlo | May 2 | May 17 | Oct 3 | 154 |
| Meriden | May 4 | May 17 | Oct 4 | 153 |
| Merrill | Apr 30 | May 12 | Oct 4 | 157 |
| Meservey | Apr 29 | May 10 | Oct 7 | 161 |
| Middletown | Apr 15 | May 1 | Oct 20 | 188 |
| Miles | Apr 25 | May 11 | Oct 16 | 174 |
| Milford | May 1 | May 14 | Oct 6 | 158 |
| Millersburg | Apr 28 | May 12 | Oct 9 | 164 |
| Millerton | Apr 21 | May 6 | Oct 19 | 181 |
| Milo | Apr 24 | May 8 | Oct 12 | 171 |
| Milton | Apr 26 | May 11 | Oct 13 | 170 |
| Minburn | Apr 25 | May 8 | Oct 10 | 168 |
| Minden | Apr 23 | May 5 | Oct 14 | 174 |
| Mingo | Apr 22 | May 4 | Oct 17 | 178 |
| Missouri Valley | Apr 29 | May 13 | Oct 8 | 162 |
| Mitchell | Apr 30 | May 12 | Oct 9 | 162 |
| Mitchellville | Apr 21 | May 5 | Oct 15 | 177 |
| Modale | Apr 22 | May 5 | Oct 17 | 178 |
| Mondamin | May 1 | May 12 | Oct 3 | 155 |
| Monmouth | Apr 25 | May 9 | Oct 14 | 172 |
| Monona | May 1 | May 14 | Oct 3 | 155 |
| Monroe | Apr 21 | May 5 | Oct 15 | 177 |
| Montezuma | May 3 | May 17 | Oct 6 | 156 |
| Monticello | May 1 | May 18 | Oct 4 | 156 |
| Montour | Apr 30 | May 11 | Oct 9 | 162 |
| Montrose | Apr 12 | Apr 26 | Oct 25 | 196 |
| Moorhead | May 1 | May 12 | Oct 3 | 155 |
| Moorland | Apr 28 | May 9 | Oct 8 | 163 |
| Moravia | Apr 18 | May 2 | Oct 23 | 188 |
| Morley | Apr 27 | May 10 | Oct 13 | 169 |
| Morning Sun | Apr 26 | May 11 | Oct 10 | 167 |
| Morrison | Apr 29 | May 12 | Oct 9 | 163 |
| Moulton | Apr 28 | May 11 | Oct 14 | 169 |
| Mount Auburn | May 3 | May 17 | Oct 3 | 153 |
| Mount Ayr | Apr 25 | May 9 | Oct 12 | 170 |
| Mount Pleasant | Apr 30 | May 14 | Oct 10 | 163 |
| Mount Vernon | Apr 28 | May 13 | Oct 12 | 167 |
| Moville | Apr 29 | May 11 | Oct 7 | 161 |
| Murray | Apr 29 | May 11 | Oct 9 | 163 |
| Muscatine | Apr 24 | May 9 | Oct 14 | 173 |
| Mystic | Apr 18 | May 2 | Oct 23 | 188 |
| Nashua | Apr 30 | May 14 | Oct 6 | 159 |
| Nemaha | Apr 25 | May 7 | Oct 13 | 171 |
| Neola | Apr 29 | May 13 | Oct 8 | 162 |
| Nevada | Apr 24 | May 7 | Oct 12 | 171 |
| New Albin | Apr 22 | May 5 | Oct 17 | 178 |
| New Hampton | May 2 | May 14 | Oct 5 | 156 |
| New Hartford | Apr 27 | May 10 | Oct 10 | 166 |
| New Liberty | Apr 27 | May 13 | Oct 10 | 166 |
| New London | Apr 30 | May 14 | Oct 10 | 163 |
| New Market | Apr 25 | May 7 | Oct 11 | 169 |
| New Providence | Apr 27 | May 8 | Oct 10 | 166 |
| New Sharon | Apr 21 | May 4 | Oct 16 | 178 |
| New Vienna | Apr 21 | May 6 | Oct 18 | 180 |
| New Virginia | Apr 24 | May 8 | Oct 12 | 171 |
| Newell | Apr 25 | May 7 | Oct 13 | 171 |
| Newhall | May 3 | May 17 | Oct 3 | 153 |
| Newton | Apr 22 | May 4 | Oct 17 | 178 |
| Nichols | Apr 24 | May 9 | Oct 14 | 173 |
| Nodaway | Apr 27 | May 11 | Oct 12 | 168 |
| Nora Springs | Apr 29 | May 9 | Oct 7 | 161 |
| North Buena Vista | Apr 21 | May 6 | Oct 18 | 180 |
| North English | Apr 28 | May 12 | Oct 9 | 164 |
| North Liberty | Apr 27 | May 11 | Oct 11 | 167 |
| North Washington | May 2 | May 14 | Oct 5 | 156 |
| Northboro | Apr 20 | May 3 | Oct 17 | 180 |
| Northwood | May 4 | May 16 | Oct 4 | 153 |
| Norwalk | Apr 18 | May 2 | Oct 20 | 185 |
| Norway | Apr 27 | May 11 | Oct 11 | 167 |
| Numa | Apr 28 | May 11 | Oct 14 | 169 |
| Oakland | Apr 23 | May 5 | Oct 14 | 174 |
| Oakland Acres | May 3 | May 17 | Oct 6 | 156 |
| Oakville | Apr 14 | May 2 | Oct 24 | 193 |
| Ocheyedan | May 5 | May 17 | Oct 3 | 151 |
| Odebolt | Apr 30 | May 11 | Oct 6 | 159 |
| Oelwein | Apr 30 | May 13 | Oct 9 | 162 |
| Ogden | Apr 28 | May 11 | Oct 12 | 167 |
| Okoboji | Apr 28 | May 9 | Oct 11 | 166 |
| Olds | Apr 30 | May 14 | Oct 10 | 163 |
| Olin | Apr 27 | May 10 | Oct 13 | 169 |
| Ollie | Apr 24 | May 9 | Oct 15 | 174 |
| Onawa | May 1 | May 13 | Oct 3 | 155 |
| Onslow | Apr 28 | May 12 | Oct 10 | 165 |
| Orange City | Apr 30 | May 12 | Oct 3 | 156 |
| Orchard | Apr 30 | May 12 | Oct 9 | 162 |
| Orient | Apr 25 | May 7 | Oct 12 | 170 |
| Orleans | Apr 28 | May 9 | Oct 11 | 166 |
| Osage | Apr 30 | May 12 | Oct 9 | 162 |
| Osceola | Apr 29 | May 11 | Oct 9 | 163 |
| Oskaloosa | Apr 21 | May 4 | Oct 16 | 178 |
| Ossian | May 1 | May 14 | Oct 3 | 155 |
| Osterdock | Apr 21 | May 6 | Oct 18 | 180 |
| Otho | Apr 28 | May 9 | Oct 8 | 163 |
| Oto | May 3 | May 16 | Oct 1 | 151 |
| Ottosen | Apr 30 | May 11 | Oct 6 | 159 |
| Ottumwa | Apr 23 | May 7 | Oct 14 | 174 |
| Owasa | Apr 28 | May 11 | Oct 10 | 165 |
| Oxford | Apr 21 | May 6 | Oct 18 | 180 |
| Oxford Junction | Apr 27 | May 13 | Oct 10 | 166 |
| Oyens | Apr 30 | May 12 | Oct 4 | 157 |
| Pacific Junction | Apr 23 | May 6 | Oct 11 | 171 |
| Packwood | Apr 27 | May 14 | Oct 12 | 168 |
| Palmer | Apr 26 | May 8 | Oct 7 | 164 |
| Palo | Apr 28 | May 13 | Oct 12 | 167 |
| Panama | Apr 27 | May 9 | Oct 9 | 165 |
| Panora | May 2 | May 17 | Oct 3 | 154 |
| Panorama Park | Apr 16 | Apr 30 | Oct 25 | 192 |
| Parkersburg | Apr 27 | May 8 | Oct 8 | 164 |
| Parnell | Apr 28 | May 12 | Oct 9 | 164 |
| Paton | Apr 26 | May 8 | Oct 9 | 166 |
| Patterson | Apr 30 | May 11 | Oct 3 | 156 |
| Paullina | Apr 29 | May 11 | Oct 10 | 164 |
| Pella | Apr 20 | May 4 | Oct 19 | 182 |
| Peosta | Apr 28 | May 12 | Oct 11 | 166 |
| Perry | Apr 25 | May 8 | Oct 10 | 168 |
| Persia | Apr 29 | May 13 | Oct 8 | 162 |
| Peterson | May 4 | May 17 | Oct 4 | 153 |
| Pierson | Apr 30 | May 11 | Oct 9 | 162 |
| Pilot Mound | Apr 28 | May 11 | Oct 12 | 167 |
| Pisgah | May 1 | May 12 | Oct 3 | 155 |
| Plainfield | Apr 29 | May 9 | Oct 9 | 163 |
| Plano | Apr 18 | May 2 | Oct 23 | 188 |
| Pleasant Hill | Apr 18 | May 2 | Oct 20 | 185 |
| Pleasant Plain | Apr 28 | May 11 | Oct 11 | 166 |
| Pleasanton | Apr 16 | May 2 | Oct 21 | 188 |
| Pleasantville | Apr 20 | May 4 | Oct 19 | 182 |
| Plover | Apr 26 | May 8 | Oct 7 | 164 |
| Plymouth | Apr 29 | May 9 | Oct 7 | 161 |
| Pocahontas | Apr 26 | May 8 | Oct 7 | 164 |
| Polk City | Apr 19 | May 3 | Oct 18 | 182 |
| Pomeroy | Apr 26 | May 8 | Oct 7 | 164 |
| Popejoy | Apr 28 | May 11 | Oct 10 | 165 |
| Portsmouth | Apr 27 | May 9 | Oct 9 | 165 |
| Postville | May 1 | May 14 | Oct 3 | 155 |
| Prairie City | Apr 21 | May 5 | Oct 15 | 177 |
| Prairieburg | May 3 | May 17 | Oct 7 | 157 |
| Prescott | Apr 27 | May 11 | Oct 12 | 168 |
| Preston | Apr 25 | May 9 | Oct 14 | 172 |
| Primghar | Apr 29 | May 11 | Oct 10 | 164 |
| Princeton | Apr 16 | Apr 30 | Oct 25 | 192 |
| Promise City | Apr 21 | May 6 | Oct 19 | 181 |
| Protivin | May 8 | May 21 | Oct 1 | 146 |
| Pulaski | Apr 16 | Apr 30 | Oct 22 | 189 |
| Quasqueton | Apr 30 | May 12 | Oct 7 | 160 |
| Quimby | May 4 | May 17 | Oct 4 | 153 |
| Radcliffe | Apr 28 | May 11 | Oct 10 | 165 |
| Rake | Apr 30 | May 10 | Oct 7 | 160 |
| Ralston | Apr 27 | May 8 | Oct 10 | 166 |
| Randalia | May 4 | May 17 | Oct 4 | 153 |
| Randall | Apr 26 | May 9 | Oct 8 | 165 |
| Randolph | Apr 19 | May 2 | Oct 19 | 183 |
| Rathbun | Apr 18 | May 2 | Oct 23 | 188 |
| Raymond | Apr 27 | May 10 | Oct 10 | 166 |
| Readlyn | Apr 29 | May 9 | Oct 9 | 163 |
| Reasnor | Apr 22 | May 4 | Oct 17 | 178 |
| Red Oak | Apr 24 | May 8 | Oct 13 | 172 |
| Redding | Apr 25 | May 9 | Oct 12 | 170 |
| Redfield | May 2 | May 17 | Oct 3 | 154 |
| Reinbeck | Apr 29 | May 12 | Oct 9 | 163 |
| Rembrandt | Apr 30 | May 11 | Oct 5 | 158 |
| Remsen | Apr 30 | May 12 | Oct 4 | 157 |
| Renwick | Apr 26 | May 7 | Oct 12 | 169 |
| Rhodes | Apr 24 | May 7 | Oct 12 | 171 |
| Riceville | Apr 30 | May 12 | Oct 9 | 162 |
| Richland | Apr 27 | May 14 | Oct 12 | 168 |
| Rickardsville | Apr 19 | May 4 | Oct 21 | 185 |
| Ricketts | May 3 | May 16 | Oct 1 | 151 |
| Ridgeway | May 8 | May 21 | Oct 1 | 146 |
| Rinard | Apr 26 | May 6 | Oct 10 | 167 |
| Ringsted | May 2 | May 14 | Oct 3 | 154 |
| Rippey | Apr 25 | May 8 | Oct 10 | 168 |
| Riverdale | Apr 16 | Apr 30 | Oct 25 | 192 |
| Riverside | Apr 29 | May 14 | Oct 9 | 163 |
| Riverton | Apr 19 | May 2 | Oct 19 | 183 |
| Robins | Apr 28 | May 13 | Oct 12 | 167 |
| Rock Falls | Apr 29 | May 9 | Oct 7 | 161 |
| Rock Rapids | May 1 | May 13 | Oct 4 | 156 |
| Rock Valley | Apr 30 | May 12 | Oct 3 | 156 |
| Rockford | Apr 30 | May 14 | Oct 6 | 159 |
| Rockwell | Apr 29 | May 9 | Oct 7 | 161 |
| Rockwell City | Apr 26 | May 6 | Oct 10 | 167 |
| Rodman | Apr 30 | May 11 | Oct 6 | 159 |
| Rodney | May 3 | May 16 | Oct 1 | 151 |
| Roland | Apr 24 | May 7 | Oct 12 | 171 |
| Rolfe | Apr 26 | May 8 | Oct 7 | 164 |
| Rome | Apr 27 | May 14 | Oct 12 | 168 |
| Rose Hill | Apr 21 | May 4 | Oct 16 | 178 |
| Rossie | Apr 30 | May 11 | Oct 5 | 158 |
| Rowan | Apr 30 | May 12 | Oct 10 | 163 |
| Rowley | Apr 30 | May 12 | Oct 7 | 160 |
| Royal | May 2 | May 15 | Oct 2 | 153 |
| Rudd | Apr 30 | May 12 | Oct 9 | 162 |
| Runnells | Apr 21 | May 5 | Oct 15 | 177 |
| Russell | May 5 | May 19 | Oct 5 | 153 |
| Ruthven | Apr 27 | May 9 | Oct 7 | 163 |
| Rutland | Apr 27 | May 7 | Oct 9 | 165 |
| Ryan | May 3 | May 17 | Oct 7 | 157 |
| Sabula | May 2 | May 18 | Oct 7 | 158 |
| Sac City | Apr 30 | May 11 | Oct 6 | 159 |
| Sageville | Apr 19 | May 4 | Oct 21 | 185 |
| Salem | Apr 30 | May 14 | Oct 10 | 163 |
| Salix | Apr 29 | May 14 | Oct 5 | 159 |
| Sanborn | May 1 | May 13 | Oct 7 | 159 |
| Sandyville | Apr 24 | May 8 | Oct 12 | 171 |
| Scarville | Apr 30 | May 10 | Oct 7 | 160 |
| Schaller | Apr 25 | May 7 | Oct 13 | 171 |
| Schleswig | Apr 27 | May 9 | Oct 11 | 167 |
| Scranton | Apr 26 | May 8 | Oct 9 | 166 |
| Searsboro | May 3 | May 17 | Oct 6 | 156 |
| Sergeant Bluff | Apr 29 | May 11 | Oct 7 | 161 |
| Seymour | Apr 21 | May 6 | Oct 19 | 181 |
| Shambaugh | Apr 25 | May 7 | Oct 11 | 169 |
| Shannon City | Apr 28 | May 9 | Oct 11 | 166 |
| Sharpsburg | Apr 24 | May 6 | Oct 15 | 174 |
| Sheffield | Apr 29 | May 10 | Oct 9 | 163 |
| Shelby | Apr 27 | May 9 | Oct 9 | 165 |
| Sheldahl | Apr 26 | May 8 | Oct 12 | 169 |
| Sheldon | May 5 | May 18 | Sep 28 | 146 |
| Shell Rock | Apr 27 | May 8 | Oct 8 | 164 |
| Shellsburg | May 3 | May 17 | Oct 3 | 153 |
| Shenandoah | Apr 20 | May 3 | Oct 17 | 180 |
| Sherrill | Apr 19 | May 4 | Oct 21 | 185 |
| Shueyville | Apr 27 | May 11 | Oct 11 | 167 |
| Sibley | May 5 | May 17 | Oct 3 | 151 |
| Sidney | Apr 19 | May 2 | Oct 19 | 183 |
| Sigourney | Apr 24 | May 9 | Oct 15 | 174 |
| Silver City | Apr 23 | May 6 | Oct 11 | 171 |
| Sioux Center | Apr 30 | May 12 | Oct 3 | 156 |
| Sioux City | Apr 29 | May 11 | Oct 7 | 161 |
| Sioux Rapids | Apr 30 | May 11 | Oct 5 | 158 |
| Slater | Apr 26 | May 8 | Oct 12 | 169 |
| Sloan | May 1 | May 15 | Oct 6 | 158 |
| Smithland | May 3 | May 16 | Oct 1 | 151 |
| Soldier | Apr 25 | May 7 | Oct 12 | 170 |
| Solon | Apr 21 | May 6 | Oct 18 | 180 |
| Somers | Apr 26 | May 6 | Oct 10 | 167 |
| South English | Apr 24 | May 9 | Oct 15 | 174 |
| Spencer | May 1 | May 14 | Oct 3 | 155 |
| Spillville | May 3 | May 16 | Oct 7 | 157 |
| Spirit Lake | Apr 28 | May 9 | Oct 11 | 166 |
| Spragueville | Apr 25 | May 9 | Oct 14 | 172 |
| Spring Hill | Apr 18 | May 2 | Oct 20 | 185 |
| Springbrook | Apr 25 | May 11 | Oct 16 | 174 |
| Springville | Apr 27 | May 10 | Oct 13 | 169 |
| St. Ansgar | Apr 30 | May 12 | Oct 9 | 162 |
| St. Anthony | Apr 24 | May 7 | Oct 12 | 171 |
| St. Charles | Apr 24 | May 8 | Oct 12 | 171 |
| St. Donatus | Apr 28 | May 12 | Oct 11 | 166 |
| St. Lucas | May 4 | May 17 | Oct 4 | 153 |
| St. Marys | Apr 24 | May 8 | Oct 12 | 171 |
| St. Olaf | May 8 | May 22 | Oct 1 | 146 |
| St. Paul | Apr 17 | May 1 | Oct 22 | 188 |
| Stacyville | Apr 30 | May 12 | Oct 9 | 162 |
| Stanhope | May 3 | May 16 | Oct 2 | 152 |
| Stanley | May 4 | May 15 | Oct 1 | 150 |
| Stanton | Apr 24 | May 8 | Oct 13 | 172 |
| Stanwood | Apr 21 | May 4 | Oct 15 | 177 |
| State Center | Apr 24 | May 7 | Oct 12 | 171 |
| Steamboat Rock | Apr 27 | May 8 | Oct 10 | 166 |
| Stockport | Apr 26 | May 11 | Oct 13 | 170 |
| Stockton | Apr 23 | May 8 | Oct 15 | 175 |
| Storm Lake | Apr 25 | May 7 | Oct 13 | 171 |
| Story City | Apr 26 | May 9 | Oct 8 | 165 |
| Stout | Apr 29 | May 12 | Oct 9 | 163 |
| Stratford | May 3 | May 16 | Oct 2 | 152 |
| Strawberry Point | May 8 | May 22 | Oct 1 | 146 |
| Struble | Apr 30 | May 12 | Oct 3 | 156 |
| Stuart | Apr 25 | May 7 | Oct 12 | 170 |
| Sully | May 3 | May 17 | Oct 6 | 156 |
| Sumner | Apr 29 | May 9 | Oct 9 | 163 |
| Superior | Apr 28 | May 9 | Oct 11 | 166 |
| Sutherland | Apr 29 | May 11 | Oct 10 | 164 |
| Swaledale | May 3 | May 15 | Oct 1 | 151 |
| Swan | Apr 21 | May 5 | Oct 15 | 177 |
| Swea City | May 4 | May 14 | Oct 1 | 150 |
| Swisher | Apr 27 | May 11 | Oct 11 | 167 |
| Tabor | Apr 19 | May 2 | Oct 19 | 183 |
| Tama | Apr 30 | May 11 | Oct 9 | 162 |
| Templeton | Apr 27 | May 8 | Oct 10 | 166 |
| Tennant | Apr 27 | May 9 | Oct 9 | 165 |
| Terril | Apr 28 | May 9 | Oct 11 | 166 |
| Thayer | Apr 23 | May 6 | Oct 17 | 177 |
| Thompson | Apr 30 | May 10 | Oct 7 | 160 |
| Thor | Apr 26 | May 7 | Oct 12 | 169 |
| Thornburg | Apr 24 | May 9 | Oct 15 | 174 |
| Thornton | May 3 | May 15 | Oct 1 | 151 |
| Thurman | Apr 19 | May 2 | Oct 19 | 183 |
| Tiffin | Apr 21 | May 6 | Oct 18 | 180 |
| Tingley | Apr 23 | May 6 | Oct 17 | 177 |
| Tipton | Apr 21 | May 4 | Oct 15 | 177 |
| Titonka | Apr 30 | May 11 | Oct 6 | 159 |
| Toledo | Apr 30 | May 11 | Oct 9 | 162 |
| Toronto | Apr 27 | May 13 | Oct 10 | 166 |
| Traer | Apr 30 | May 11 | Oct 9 | 162 |
| Treynor | Apr 23 | May 5 | Oct 14 | 174 |
| Tripoli | Apr 29 | May 9 | Oct 9 | 163 |
| Truesdale | Apr 30 | May 11 | Oct 5 | 158 |
| Truro | Apr 30 | May 11 | Oct 3 | 156 |
| Turin | Apr 25 | May 7 | Oct 12 | 170 |
| Udell | Apr 28 | May 11 | Oct 14 | 169 |
| Underwood | Apr 18 | Apr 30 | Oct 21 | 186 |
| Union | Apr 27 | May 8 | Oct 10 | 166 |
| Unionville | Apr 18 | May 2 | Oct 23 | 188 |
| University Heights | Apr 21 | May 6 | Oct 18 | 180 |
| University Park | Apr 21 | May 4 | Oct 16 | 178 |
| Urbana | May 3 | May 17 | Oct 3 | 153 |
| Urbandale | Apr 19 | May 3 | Oct 18 | 182 |
| Ute | Apr 25 | May 7 | Oct 12 | 170 |
| Vail | Apr 27 | May 9 | Oct 11 | 167 |
| Valeria | Apr 22 | May 4 | Oct 17 | 178 |
| Van Horne | May 3 | May 17 | Oct 3 | 153 |
| Van Meter | Apr 18 | May 2 | Oct 20 | 185 |
| Van Wert | Apr 29 | May 11 | Oct 9 | 163 |
| Varina | Apr 26 | May 8 | Oct 7 | 164 |
| Ventura | May 3 | May 15 | Oct 1 | 151 |
| Victor | Apr 28 | May 11 | Oct 10 | 165 |
| Villisca | Apr 27 | May 11 | Oct 12 | 168 |
| Vincent | Apr 28 | May 9 | Oct 8 | 163 |
| Vining | Apr 28 | May 11 | Oct 10 | 165 |
| Vinton | May 3 | May 17 | Oct 3 | 153 |
| Volga | May 8 | May 22 | Oct 1 | 146 |
| Wadena | May 4 | May 17 | Oct 4 | 153 |
| Wahpeton | May 1 | May 14 | Oct 6 | 158 |
| Walcott | Apr 23 | May 8 | Oct 15 | 175 |
| Walford | Apr 27 | May 11 | Oct 11 | 167 |
| Walker | May 3 | May 17 | Oct 7 | 157 |
| Wall Lake | Apr 30 | May 11 | Oct 6 | 159 |
| Wallingford | May 2 | May 14 | Oct 3 | 154 |
| Walnut | Apr 30 | May 15 | Oct 2 | 155 |
| Wapello | Apr 14 | May 2 | Oct 24 | 193 |
| Washington | Apr 28 | May 11 | Oct 11 | 166 |
| Washta | Apr 30 | May 11 | Oct 9 | 162 |
| Waterloo | Apr 27 | May 10 | Oct 10 | 166 |
| Waterville | May 2 | May 16 | Oct 11 | 162 |
| Waucoma | May 2 | May 14 | Oct 5 | 156 |
| Waukee | Apr 18 | May 2 | Oct 20 | 185 |
| Waukon | May 2 | May 16 | Oct 11 | 162 |
| Waverly | Apr 29 | May 9 | Oct 9 | 163 |
| Wayland | Apr 28 | May 11 | Oct 11 | 166 |
| Webb | Apr 30 | May 11 | Oct 5 | 158 |
| Webster | Apr 24 | May 9 | Oct 15 | 174 |
| Webster City | May 3 | May 16 | Oct 2 | 152 |
| Weldon | Apr 29 | May 11 | Oct 9 | 163 |
| Wellman | Apr 28 | May 11 | Oct 11 | 166 |
| Wellsburg | Apr 29 | May 12 | Oct 9 | 163 |
| Welton | Apr 25 | May 9 | Oct 14 | 172 |
| Wesley | Apr 30 | May 11 | Oct 6 | 159 |
| West Bend | Apr 30 | May 11 | Oct 6 | 159 |
| West Branch | Apr 29 | May 14 | Oct 9 | 163 |
| West Burlington | Apr 15 | May 1 | Oct 20 | 188 |
| West Chester | Apr 28 | May 11 | Oct 11 | 166 |
| West Des Moines | Apr 18 | May 2 | Oct 20 | 185 |
| West Liberty | Apr 29 | May 14 | Oct 9 | 163 |
| West Okoboji | May 1 | May 14 | Oct 6 | 158 |
| West Point | Apr 17 | May 1 | Oct 22 | 188 |
| West Union | May 4 | May 17 | Oct 4 | 153 |
| Westfield | May 3 | May 16 | Oct 3 | 153 |
| Westgate | Apr 27 | May 10 | Oct 13 | 169 |
| Westphalia | Apr 27 | May 9 | Oct 9 | 165 |
| Westside | Apr 27 | May 9 | Oct 11 | 167 |
| Westwood | Apr 30 | May 14 | Oct 10 | 163 |
| What Cheer | Apr 24 | May 9 | Oct 15 | 174 |
| Wheatland | Apr 27 | May 13 | Oct 10 | 166 |
| Whiting | May 1 | May 13 | Oct 3 | 155 |
| Whittemore | Apr 30 | May 11 | Oct 6 | 159 |
| Whitten | Apr 27 | May 8 | Oct 10 | 166 |
| Willey | Apr 27 | May 8 | Oct 10 | 166 |
| Williams | May 3 | May 16 | Oct 2 | 152 |
| Williamsburg | Apr 28 | May 12 | Oct 9 | 164 |
| Williamson | May 5 | May 19 | Oct 5 | 153 |
| Wilton | Apr 18 | May 2 | Oct 22 | 187 |
| Windsor Heights | Apr 18 | May 2 | Oct 20 | 185 |
| Winfield | Apr 26 | May 11 | Oct 10 | 167 |
| Winterset | Apr 30 | May 11 | Oct 3 | 156 |
| Winthrop | Apr 30 | May 12 | Oct 7 | 160 |
| Wiota | Apr 30 | May 15 | Oct 2 | 155 |
| Woden | Apr 29 | May 10 | Oct 7 | 161 |
| Woodbine | Apr 29 | May 13 | Oct 8 | 162 |
| Woodburn | Apr 29 | May 11 | Oct 9 | 163 |
| Woodward | Apr 25 | May 8 | Oct 10 | 168 |
| Woolstock | May 3 | May 16 | Oct 2 | 152 |
| Worthington | Apr 28 | May 12 | Oct 10 | 165 |
| Wyoming | Apr 28 | May 12 | Oct 10 | 165 |
| Yale | May 2 | May 17 | Oct 3 | 154 |
| Yetter | Apr 30 | May 11 | Oct 6 | 159 |
| Yorktown | Apr 25 | May 7 | Oct 11 | 169 |
| Zearing | Apr 24 | May 7 | Oct 12 | 171 |
| Zwingle | Apr 28 | May 12 | Oct 11 | 166 |
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 Des Moines, IA?
The average last spring frost in Des Moines is April 18, and only 1 year in 10 has a frost after May 2. The average first fall frost is October 20. These come from NOAA's 1991–2020 records at the Des Moines INTL AP station.
When should I plant tomatoes in Iowa?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In Des Moines that's about Apr 25 to May 2. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Iowa: Iowa climate zones (insulation) · Iowa planting zones · Frost line depth by state