Frost dates in Morrow County, Oregon
The average last spring frost in Morrow County falls Apr 14 to Apr 26 and the average first fall frost Oct 19 to Oct 21, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a to 7b. Places: Boardman, Heppner, Ione, Irrigon, Lexington. 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 |
|---|---|---|---|---|
| 97818 | Boardman | Apr 14 | Oct 21 | 7b |
| 97836 | Heppner | Apr 26 | Oct 19 | 7a |
| 97839 | Lexington | Apr 26 | Oct 19 | 7a |
| 97843 | Ione | Apr 26 | Oct 19 | 7b |
| 97844 | Irrigon | Apr 14 | Oct 21 | 7b |
Nearby counties
Gilliam County Umatilla County Sherman County Wheeler County Wasco County Grant County
All Oregon counties · Download Oregon frost dates (CSV)
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