Frost dates in Grant County, Oregon
The average last spring frost in Grant County falls May 4 to Jun 5 and the average first fall frost Sep 14 to Oct 6, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b to 7a. Places: Canyon City, Dayville, John Day, Long Creek, Monument, Mount Vernon. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 97817 | Jun 5 | Sep 14 | 6b | |
| 97820 | Canyon City | May 28 | Sep 18 | 6b |
| 97825 | Dayville | May 4 | Oct 6 | 7a |
| 97845 | John Day | May 28 | Sep 18 | 6b |
| 97848 | May 4 | Oct 6 | 7a | |
| 97856 | Long Creek | Jun 5 | Sep 14 | 6b |
| 97864 | Monument | May 9 | Sep 27 | 7a |
| 97865 | Mount Vernon | May 28 | Sep 18 | 6b |
| 97869 | Prairie City | May 28 | Sep 18 | 6b |
| 97873 | Seneca | May 28 | Sep 18 | 5b |
| 97877 | Sumpter | May 25 | Sep 15 | 6b |
Nearby counties
Wheeler County Crook County Baker County Union County Morrow County Umatilla County
All Oregon counties · Download Oregon frost dates (CSV)
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