Frost dates in Columbia County, Oregon
The average last spring frost in Columbia County falls Apr 8 to May 8 and the average first fall frost Oct 1 to Nov 7, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 8a to 8b. Places: Clatskanie, Columbia City, Deer Island, Rainier, Scappoose, St. Helens. 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 |
|---|---|---|---|---|
| 97016 | Clatskanie | Apr 24 | Oct 24 | 8b |
| 97018 | Columbia City | Apr 18 | Nov 7 | 8b |
| 97048 | Rainier | Apr 8 | Nov 5 | 8b |
| 97051 | St. Helens | Apr 18 | Nov 7 | 8b |
| 97053 | Warren | Apr 18 | Nov 7 | 8b |
| 97054 | Deer Island | Apr 18 | Nov 7 | 8b |
| 97056 | Scappoose | Apr 10 | Nov 2 | 8b |
| 97064 | Vernonia | May 8 | Oct 1 | 8a |
Nearby counties
Washington County Multnomah County Clatsop County Clackamas County Yamhill County Tillamook County
All Oregon counties · Download Oregon frost dates (CSV)
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