Frost dates in Pennington County, Minnesota
The average last spring frost in Pennington County falls May 9 to May 20 and the average first fall frost Sep 17 to Sep 30, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 3b to 4a. Places: Goodridge, St. Hilaire, Thief River Falls. 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 |
|---|---|---|---|---|
| 56701 | Thief River Falls | May 14 | Sep 28 | 4a |
| 56725 | Goodridge | May 20 | Sep 17 | 3b |
| 56754 | St. Hilaire | May 9 | Sep 30 | 3b |
Nearby counties
Red Lake County Polk County Marshall County Clearwater County Roseau County Mahnomen County
All Minnesota counties · Download Minnesota frost dates (CSV)
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