Frost dates in Benton County, Oregon
The average last spring frost in Benton County falls Apr 11 to May 15 and the average first fall frost Oct 8 to Nov 3, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 8b. Places: Alsea, Bellfountain, Corvallis, Philomath. 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 |
|---|---|---|---|---|
| 97324 | Alsea | Apr 13 | Nov 3 | 8b |
| 97330 | Corvallis | Apr 17 | Oct 28 | 8b |
| 97331 | Corvallis | Apr 17 | Oct 28 | 8b |
| 97333 | Corvallis | Apr 11 | Oct 30 | 8b |
| 97370 | Philomath | May 15 | Oct 8 | 8b |
| 97456 | Bellfountain | Apr 11 | Oct 30 | 8b |
Nearby counties
Polk County Lincoln County Linn County Lane County Marion County Yamhill County
All Oregon counties · Download Oregon frost dates (CSV)
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