Oregon · 48 stations
Oregon Frost Dates: 48 Weather Stations
48 NOAA weather stations in Oregon with at least 25 years of frost records.
| Station | Zone | Last spring frost (50%) | First fall frost (50%) | Frost-free days |
|---|---|---|---|---|
| Astoria, OR | 9a | March 26 | November 11 | 232 |
| Baker City, OR | 6a | May 25 | September 15 | 111 |
| Barnes Station, OR | 6a | June 2 | September 17 | 104 |
| Boardman, OR | 7b | April 14 | October 21 | 188 |
| Burns, OR | 5b | June 11 | September 6 | 85 |
| Clatskanie, OR | 8b | April 24 | October 24 | 184 |
| Cottage Grove, OR | 8b | April 24 | October 25 | 183 |
| Dallas, OR | 8b | April 16 | November 1 | 199 |
| Dorena, OR | 8b | April 16 | October 28 | 194 |
| Drain, OR | 8b | April 16 | October 25 | 193 |
| Estacada, OR | 9a | March 27 | November 14 | 230 |
| Forest Grove, OR | 8b | April 16 | October 26 | 192 |
| Government Camp, OR | 7b | May 27 | October 9 | 134 |
| Halfway, OR | 6a | May 15 | September 24 | 130 |
| Heppner, OR | 7a | April 26 | October 19 | 174 |
| La Grande, OR | 6b | May 6 | October 1 | 146 |
| Lacomb, OR | 8b | April 26 | October 24 | 184 |
| Leaburg, OR | 9a | April 3 | November 11 | 220 |
| Marion Forks Fish Hatchery, OR | 7b | May 15 | September 30 | 134 |
| Milton Freewater, OR | 7b | March 25 | October 29 | 218 |
| Moro, OR | 7a | May 12 | October 4 | 143 |
| Otis, OR | 9a | April 4 | November 16 | 227 |
| Pendleton, OR | 7a | April 26 | October 16 | 174 |
| Pilot Rock, OR | 7a | May 7 | October 4 | 147 |
| Portland, OR | 9a | March 13 | November 19 | 247 |
| Prospect, OR | 8a | May 19 | October 3 | 136 |
| Riddle, OR | 9a | March 31 | November 6 | 221 |
| Rome, OR | 6b | June 11 | September 10 | 88 |
| Sexton Summit, OR | 8b | May 16 | October 30 | 164 |
| Silverton, OR | 8b | March 28 | November 10 | 227 |
| Stayton, OR | 8b | March 29 | November 6 | 222 |
| Three Lynx, OR | 8a | April 5 | November 8 | 217 |
| Toketee Falls, OR | 8b | April 29 | October 18 | 171 |
| near Cascade Locks, OR | 8b | March 14 | November 27 | 257 |
| near Coquille, OR | 9a | March 28 | November 6 | 225 |
| near Corvallis, OR | 8b | April 17 | October 28 | 194 |
| near Eugene, OR | 8b | April 11 | October 23 | 196 |
| near La Pine, OR | 6b | June 7 | September 18 | 100 |
| near Lowell, OR | 9a | March 7 | November 27 | 263 |
| near Medford, OR | 8b | April 8 | October 29 | 204 |
| near Oakridge, OR | 8b | April 24 | October 24 | 183 |
| near Redmond, OR | 6b | June 9 | September 14 | 98 |
| near Roseburg, OR | 9a | March 23 | November 18 | 237 |
| near Sandy, OR | 8b | March 27 | November 18 | 239 |
| near Shady Cove, OR | 8a | April 29 | October 17 | 171 |
| near Sweet Home, OR | 8b | April 12 | October 28 | 197 |
| near Vernonia, OR | 8a | May 8 | October 1 | 144 |
| near Warm Springs, OR | 7b | May 5 | October 7 | 154 |