Frost dates by state
Oregon Frost Dates
Among Oregon's cities and towns that get frost every year, the average last spring frost runs from February 11 in Beaverton to June 11 in Jordan Valley. Average last frost elsewhere: Portland Feb 25, Eugene Apr 11 and Bend Jun 6. In 2 towns, frost doesn't come every winter, so they get odds instead of dates. In 10 towns, frost is possible in any month.
Frost dates for every city and town in Oregon
Dates are for 32°F at the NOAA station nearest the ZIP code at each Oregon 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 |
|---|---|---|---|---|
| Adair Village | Apr 17 | May 8 | Oct 28 | 194 |
| Adams | Mar 25 | Apr 16 | Oct 29 | 218 |
| Adrian | May 7 | May 27 | Oct 5 | 151 |
| Albany | Apr 17 | May 8 | Oct 28 | 194 |
| Amity | Apr 15 | May 6 | Oct 26 | 194 |
| Antelope | May 22 | Jun 10 | Oct 3 | 134 |
| Arlington | Apr 6 | Apr 28 | Oct 21 | 198 |
| Ashland | May 6 | May 27 | Oct 8 | 155 |
| Astoria | Mar 30 | Apr 28 | Nov 18 | 233 |
| Athena | Mar 25 | Apr 16 | Oct 29 | 218 |
| Aumsville | Mar 29 | Apr 18 | Nov 6 | 222 |
| Aurora | Mar 16 | Apr 7 | Nov 14 | 243 |
| Baker City | May 25 | Jun 16 | Sep 15 | 113 |
| Bandon | Mar 9 | Apr 7 | Nov 27 | 263 |
| Banks | Apr 16 | May 5 | Oct 26 | 193 |
| Barlow | Mar 16 | Apr 7 | Nov 14 | 243 |
| Bay City | Apr 22 | May 13 | Oct 21 | 182 |
| Beaverton | Feb 11 | Mar 5 | Dec 5 | 297 |
| Bend | Jun 6 | Jun 22 | Sep 20 | 106 |
| Boardman | Apr 14 | May 2 | Oct 21 | 190 |
| Bonanza | May 31 | Jun 17 | Sep 21 | 113 |
| Brookings | Frost in 80% of winters | |||
| Brownsville | Mar 14 | Apr 14 | Nov 18 | 249 |
| Burns | Jun 11 | Jun 28 | Sep 6 | 87 |
| Butte Falls | Apr 29 | May 19 | Oct 17 | 171 |
| Canby | Mar 16 | Apr 7 | Nov 14 | 243 |
| Cannon Beach | Apr 2 | Apr 29 | Nov 12 | 224 |
| Canyon City | May 28 | Jun 15 | Sep 18 | 113 |
| Canyonville | Mar 31 | Apr 27 | Nov 6 | 220 |
| Carlton | Apr 5 | Apr 27 | Nov 7 | 216 |
| Cascade Locks | Mar 14 | Apr 4 | Nov 27 | 258 |
| Cave Junction | May 1 | May 23 | Oct 12 | 164 |
| Central Point | Apr 8 | Apr 30 | Oct 29 | 204 |
| Chiloquin | Frost possible any month | |||
| Clatskanie | Apr 24 | May 9 | Oct 24 | 183 |
| Coburg | Apr 11 | May 9 | Oct 23 | 195 |
| Columbia City | Apr 18 | May 26 | Nov 7 | 203 |
| Condon | May 10 | May 27 | Oct 7 | 150 |
| Coos Bay | Feb 21 | Mar 25 | Dec 9 | 291 |
| Coquille | Mar 28 | Apr 27 | Nov 6 | 223 |
| Cornelius | Apr 16 | May 5 | Oct 26 | 193 |
| Corvallis | Apr 17 | May 8 | Oct 28 | 194 |
| Cottage Grove | Apr 12 | May 4 | Nov 1 | 203 |
| Cove | May 11 | May 31 | Sep 26 | 138 |
| Creswell | Apr 24 | May 10 | Oct 25 | 184 |
| Culver | May 19 | Jun 7 | Oct 4 | 138 |
| Dallas | Apr 16 | May 5 | Nov 1 | 199 |
| Dayton | Apr 15 | May 6 | Oct 26 | 194 |
| Dayville | May 4 | May 23 | Oct 6 | 155 |
| Depoe Bay | Mar 12 | Apr 16 | Dec 10 | 273 |
| Detroit | Mar 9 | Apr 8 | Dec 3 | 269 |
| Donald | Mar 16 | Apr 7 | Nov 14 | 243 |
| Drain | Apr 16 | May 8 | Oct 25 | 192 |
| Dufur | May 12 | May 31 | Oct 7 | 148 |
| Dundee | Mar 21 | Apr 19 | Nov 22 | 246 |
| Dunes City | Mar 28 | Apr 21 | Nov 22 | 239 |
| Durham | Mar 18 | Apr 10 | Nov 13 | 240 |
| Eagle Point | Apr 29 | May 19 | Oct 17 | 171 |
| Echo | Apr 26 | May 10 | Oct 10 | 167 |
| Elgin | May 24 | Jun 21 | Sep 18 | 117 |
| Elkton | Apr 11 | May 10 | Nov 6 | 209 |
| Enterprise | May 24 | Jul 6 | Oct 1 | 130 |
| Estacada | Mar 27 | Apr 23 | Nov 14 | 232 |
| Eugene | Apr 11 | May 9 | Oct 23 | 195 |
| Fairview | Mar 16 | Apr 12 | Nov 20 | 249 |
| Falls City | Apr 18 | May 6 | Nov 7 | 203 |
| Florence | Apr 10 | May 5 | Nov 15 | 219 |
| Forest Grove | Apr 16 | May 5 | Oct 26 | 193 |
| Fossil | Jun 3 | Jul 3 | Sep 14 | 103 |
| Garibaldi | Apr 22 | May 13 | Oct 21 | 182 |
| Gaston | Apr 16 | May 5 | Oct 26 | 193 |
| Gates | Mar 9 | Apr 8 | Dec 3 | 269 |
| Gearhart | Mar 30 | Apr 28 | Nov 18 | 233 |
| Gervais | Apr 15 | May 6 | Oct 26 | 194 |
| Gladstone | Mar 18 | Apr 11 | Nov 18 | 245 |
| Glendale | Mar 31 | Apr 27 | Nov 6 | 220 |
| Gold Beach | Frost in 89% of winters | |||
| Gold Hill | Apr 8 | Apr 30 | Oct 29 | 204 |
| Granite | Frost possible any month | |||
| Grants Pass | Apr 8 | May 1 | Oct 28 | 203 |
| Grass Valley | May 15 | Jun 6 | Oct 11 | 149 |
| Greenhorn | Frost possible any month | |||
| Gresham | Mar 16 | Apr 12 | Nov 20 | 249 |
| Haines | May 25 | Jun 16 | Sep 15 | 113 |
| Halfway | May 15 | Jun 2 | Sep 24 | 132 |
| Halsey | Apr 11 | May 5 | Oct 30 | 202 |
| Happy Valley | Mar 18 | Apr 11 | Nov 18 | 245 |
| Harrisburg | Apr 11 | May 9 | Oct 23 | 195 |
| Helix | Mar 25 | Apr 16 | Oct 29 | 218 |
| Heppner | Apr 26 | May 11 | Oct 19 | 176 |
| Hermiston | Apr 27 | May 11 | Oct 7 | 163 |
| Hillsboro | Apr 16 | May 3 | Oct 23 | 190 |
| Hines | Jun 11 | Jun 28 | Sep 6 | 87 |
| Hood River | Apr 20 | May 9 | Oct 13 | 176 |
| Hubbard | Mar 16 | Apr 7 | Nov 14 | 243 |
| Huntington | Apr 23 | May 7 | Oct 13 | 173 |
| Idanha | May 15 | Jun 11 | Sep 30 | 138 |
| Imbler | May 24 | Jun 21 | Sep 18 | 117 |
| Independence | Apr 3 | Apr 27 | Nov 1 | 212 |
| Ione | Apr 26 | May 11 | Oct 19 | 176 |
| Irrigon | Apr 14 | May 2 | Oct 21 | 190 |
| Island City | May 6 | May 26 | Oct 1 | 148 |
| Jacksonville | Apr 8 | Apr 30 | Oct 29 | 204 |
| Jefferson | Mar 29 | Apr 18 | Nov 6 | 222 |
| John Day | May 28 | Jun 15 | Sep 18 | 113 |
| Johnson City | Mar 18 | Apr 11 | Nov 18 | 245 |
| Jordan Valley | Jun 11 | Jul 3 | Sep 10 | 91 |
| Joseph | May 24 | Jul 6 | Oct 1 | 130 |
| Junction City | Apr 11 | May 9 | Oct 23 | 195 |
| Keizer | Apr 3 | Apr 27 | Nov 1 | 212 |
| King City | Apr 1 | Apr 26 | Nov 6 | 219 |
| Klamath Falls | Jun 9 | Jun 26 | Sep 18 | 101 |
| La Grande | May 6 | May 26 | Oct 1 | 148 |
| La Pine | Jun 7 | Jul 2 | Sep 18 | 103 |
| Lafayette | Apr 5 | Apr 27 | Nov 7 | 216 |
| Lake Oswego | Mar 18 | Apr 11 | Nov 18 | 245 |
| Lakeside | Mar 25 | Apr 27 | Nov 24 | 244 |
| Lakeview | Jun 4 | Jun 22 | Sep 17 | 105 |
| Lebanon | Mar 14 | Apr 14 | Nov 18 | 249 |
| Lexington | Apr 26 | May 11 | Oct 19 | 176 |
| Lincoln City | Apr 4 | May 3 | Nov 16 | 226 |
| Lonerock | Jun 3 | Jul 3 | Sep 14 | 103 |
| Long Creek | Jun 5 | Jun 25 | Sep 14 | 101 |
| Lostine | May 24 | Jul 6 | Oct 1 | 130 |
| Lowell | Mar 7 | Apr 2 | Nov 27 | 265 |
| Lyons | Apr 30 | May 15 | Oct 22 | 175 |
| Madras | Frost possible any month | |||
| Malin | Jun 6 | Jun 23 | Sep 14 | 100 |
| Manzanita | Apr 22 | May 13 | Oct 21 | 182 |
| Maupin | May 15 | Jun 6 | Oct 11 | 149 |
| Maywood Park | Mar 13 | Apr 5 | Nov 22 | 254 |
| McMinnville | Apr 5 | Apr 27 | Nov 7 | 216 |
| Medford | Apr 8 | Apr 30 | Oct 29 | 204 |
| Merrill | Jun 6 | Jun 23 | Sep 14 | 100 |
| Metolius | Frost possible any month | |||
| Mill City | Apr 30 | May 15 | Oct 22 | 175 |
| Millersburg | Apr 17 | May 8 | Oct 28 | 194 |
| Milton-Freewater | Mar 25 | Apr 16 | Oct 29 | 218 |
| Milwaukie | Mar 18 | Apr 11 | Nov 18 | 245 |
| Mitchell | May 22 | Jun 11 | Oct 4 | 135 |
| Molalla | Mar 16 | Apr 12 | Nov 19 | 248 |
| Monmouth | Apr 3 | Apr 27 | Nov 1 | 212 |
| Monroe | Apr 11 | May 5 | Oct 30 | 202 |
| Monument | May 9 | May 26 | Sep 27 | 141 |
| Moro | May 12 | May 31 | Oct 4 | 145 |
| Mosier | Apr 20 | May 9 | Oct 13 | 176 |
| Mount Angel | Mar 28 | Apr 19 | Nov 10 | 227 |
| Mount Vernon | May 28 | Jun 15 | Sep 18 | 113 |
| Myrtle Creek | Mar 31 | Apr 27 | Nov 6 | 220 |
| Myrtle Point | Mar 21 | Apr 12 | Nov 14 | 238 |
| Nehalem | Apr 22 | May 13 | Oct 21 | 182 |
| Newberg | Mar 21 | Apr 19 | Nov 22 | 246 |
| Newport | Feb 19 | Mar 23 | Dec 16 | 300 |
| North Bend | Feb 21 | Mar 25 | Dec 9 | 291 |
| North Plains | Apr 16 | May 3 | Oct 23 | 190 |
| North Powder | May 11 | May 31 | Sep 26 | 138 |
| Nyssa | Apr 21 | May 8 | Oct 14 | 176 |
| Oakland | Mar 31 | Apr 26 | Nov 5 | 219 |
| Oakridge | Apr 24 | May 11 | Oct 24 | 183 |
| Ontario | Apr 21 | May 8 | Oct 14 | 176 |
| Oregon City | Mar 18 | Apr 11 | Nov 18 | 245 |
| Paisley | Jun 6 | Jun 28 | Sep 14 | 100 |
| Pendleton | Apr 22 | May 8 | Oct 9 | 170 |
| Philomath | Apr 17 | May 8 | Oct 28 | 194 |
| Phoenix | May 6 | May 27 | Oct 8 | 155 |
| Pilot Rock | May 7 | May 28 | Oct 4 | 150 |
| Port Orford | Feb 17 | Mar 19 | Dec 3 | 289 |
| Portland | Feb 25 | Mar 21 | Dec 1 | 279 |
| Powers | Mar 21 | Apr 12 | Nov 14 | 238 |
| Prairie City | Frost possible any month | |||
| Prescott | Apr 8 | May 2 | Nov 5 | 211 |
| Prineville | Jun 9 | Jun 26 | Sep 14 | 97 |
| Rainier | Apr 8 | May 2 | Nov 5 | 211 |
| Redmond | Jun 9 | Jun 26 | Sep 14 | 97 |
| Reedsport | Mar 25 | Apr 27 | Nov 24 | 244 |
| Richland | May 10 | May 29 | Oct 1 | 144 |
| Riddle | Mar 31 | Apr 27 | Nov 6 | 220 |
| Rivergrove | Mar 18 | Apr 10 | Nov 13 | 240 |
| Rockaway Beach | Apr 22 | May 13 | Oct 21 | 182 |
| Rogue River | Apr 8 | Apr 30 | Oct 29 | 204 |
| Roseburg | Mar 31 | Apr 26 | Nov 5 | 219 |
| Rufus | May 19 | Jun 9 | Sep 25 | 129 |
| Salem | Apr 3 | Apr 27 | Nov 1 | 212 |
| Sandy | Mar 27 | Apr 20 | Nov 18 | 236 |
| Scappoose | Apr 10 | May 1 | Nov 2 | 206 |
| Scio | Apr 26 | May 11 | Oct 24 | 181 |
| Scotts Mills | Mar 28 | Apr 19 | Nov 10 | 227 |
| Seaside | Apr 2 | Apr 29 | Nov 12 | 224 |
| Seneca | Frost possible any month | |||
| Shady Cove | Apr 29 | May 19 | Oct 17 | 171 |
| Shaniko | May 22 | Jun 10 | Oct 3 | 134 |
| Sheridan | Apr 16 | May 5 | Nov 1 | 199 |
| Sherwood | Mar 21 | Apr 19 | Nov 22 | 246 |
| Siletz | Mar 12 | Apr 16 | Dec 10 | 273 |
| Silverton | Mar 28 | Apr 19 | Nov 10 | 227 |
| Sisters | Frost possible any month | |||
| Sodaville | Mar 14 | Apr 14 | Nov 18 | 249 |
| Spray | Apr 30 | May 14 | Oct 14 | 167 |
| Springfield | Apr 11 | May 9 | Oct 23 | 195 |
| St. Helens | Apr 18 | May 26 | Nov 7 | 203 |
| St. Paul | Mar 21 | Apr 19 | Nov 22 | 246 |
| Stanfield | Apr 26 | May 10 | Oct 10 | 167 |
| Stayton | Mar 29 | Apr 18 | Nov 6 | 222 |
| Sublimity | Mar 29 | Apr 18 | Nov 6 | 222 |
| Summerville | May 24 | Jun 21 | Sep 18 | 117 |
| Sumpter | Frost possible any month | |||
| Sutherlin | Mar 31 | Apr 26 | Nov 5 | 219 |
| Sweet Home | Apr 12 | May 5 | Oct 28 | 199 |
| Talent | May 6 | May 27 | Oct 8 | 155 |
| Tangent | Apr 17 | May 8 | Oct 28 | 194 |
| The Dalles | Apr 14 | May 1 | Oct 23 | 192 |
| Tigard | Apr 1 | Apr 26 | Nov 6 | 219 |
| Tillamook | Apr 5 | May 4 | Nov 4 | 213 |
| Toledo | Feb 19 | Mar 23 | Dec 16 | 300 |
| Troutdale | Mar 26 | Apr 21 | Nov 17 | 236 |
| Tualatin | Mar 18 | Apr 10 | Nov 13 | 240 |
| Turner | Mar 29 | Apr 18 | Nov 6 | 222 |
| Ukiah | May 7 | May 28 | Oct 4 | 150 |
| Umatilla | Apr 27 | May 11 | Oct 7 | 163 |
| Union | May 11 | May 31 | Sep 26 | 138 |
| Unity | Frost possible any month | |||
| Vale | May 8 | Jun 7 | Sep 29 | 144 |
| Veneta | Apr 18 | May 5 | Oct 25 | 190 |
| Vernonia | May 8 | May 29 | Oct 1 | 146 |
| Waldport | Feb 19 | Mar 23 | Dec 16 | 300 |
| Wallowa | Jun 7 | Jul 7 | Sep 9 | 94 |
| Warrenton | Mar 26 | Apr 18 | Nov 11 | 230 |
| Wasco | May 12 | May 31 | Oct 4 | 145 |
| Waterloo | Mar 14 | Apr 14 | Nov 18 | 249 |
| West Linn | Mar 18 | Apr 11 | Nov 18 | 245 |
| Westfir | Apr 24 | May 11 | Oct 24 | 183 |
| Weston | Mar 25 | Apr 16 | Oct 29 | 218 |
| Wheeler | Apr 22 | May 13 | Oct 21 | 182 |
| Willamina | Apr 16 | May 5 | Nov 1 | 199 |
| Wilsonville | Mar 18 | Apr 10 | Nov 13 | 240 |
| Winston | Mar 31 | Apr 27 | Nov 6 | 220 |
| Wood Village | Mar 16 | Apr 12 | Nov 20 | 249 |
| Woodburn | Mar 16 | Apr 7 | Nov 14 | 243 |
| Yachats | Feb 19 | Mar 23 | Dec 11 | 295 |
| Yamhill | Apr 5 | Apr 27 | Nov 7 | 216 |
| Yoncalla | Apr 16 | May 8 | Oct 25 | 192 |
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 Portland, OR?
The average last spring frost in Portland is February 25, and only 1 year in 10 has a frost after March 21. The average first fall frost is December 1. These come from NOAA's 1991–2020 records at the Portland KGW-TV station.
When should I plant tomatoes in Oregon?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In Portland that's about Mar 4 to Mar 11; for a 9 in 10 chance of no later frost, wait until Mar 21. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Oregon: Oregon climate zones (insulation) · Oregon planting zones · Frost line depth by state