Frost dates in Umatilla County, Oregon
The average last spring frost in Umatilla County falls Mar 25 to May 12 and the average first fall frost Sep 27 to Nov 4, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6b to 7b. Places: Adams, Athena, Echo, Helix, Hermiston, McKay. 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 |
|---|---|---|---|---|
| 97801 | Tutuilla | Apr 22 | Oct 9 | 7a |
| 97810 | Adams | May 12 | Sep 27 | 7a |
| 97813 | Athena | Mar 25 | Oct 29 | 7a |
| 97826 | Echo | Apr 26 | Oct 10 | 7a |
| 97835 | Helix | May 12 | Sep 27 | 7a |
| 97838 | Hermiston | Apr 27 | Oct 7 | 7b |
| 97859 | Meacham | May 12 | Sep 27 | 6b |
| 97862 | Umapine | Mar 25 | Oct 29 | 7a |
| 97868 | McKay | May 7 | Oct 4 | 6b |
| 97875 | Stanfield | Apr 26 | Oct 10 | 7a |
| 97880 | Ukiah | May 7 | Oct 4 | 6b |
| 97882 | Umatilla | Mar 30 | Nov 4 | 7b |
| 97886 | Weston | Mar 25 | Oct 29 | 7a |
Nearby counties
Morrow County Union County Gilliam County Wallowa County Grant County Wheeler County
All Oregon counties · Download Oregon frost dates (CSV)
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