Frost dates in Polk County, Oregon
The average last spring frost in Polk County falls Apr 3 to Apr 18 and the average first fall frost Nov 1 to Nov 7, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 8b. Places: Dallas, Falls City, Independence, Monmouth, Rickreall, Salem. 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 |
|---|---|---|---|---|
| 97304 | Salem | Apr 3 | Nov 1 | 8b |
| 97338 | Dallas | Apr 16 | Nov 1 | 8b |
| 97344 | Falls City | Apr 18 | Nov 7 | 8b |
| 97351 | Independence | Apr 3 | Nov 1 | 8b |
| 97361 | Monmouth | Apr 18 | Nov 7 | 8b |
| 97371 | Rickreall | Apr 16 | Nov 1 | 8b |
Nearby counties
Yamhill County Marion County Benton County Lincoln County Linn County Washington County
All Oregon counties · Download Oregon frost dates (CSV)
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