Frost dates in Granite County, Montana
The average last spring frost in Granite County falls May 10 to Jun 1 and the average first fall frost Sep 14 to Oct 1, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Clinton, Drummond, Maxville, Philipsburg. 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 |
|---|---|---|---|---|
| 59825 | Clinton | May 22 | Sep 19 | 5b |
| 59832 | Drummond | May 10 | Oct 1 | 5b |
| 59837 | Maxville | Jun 1 | Sep 14 | 5a |
| 59858 | Philipsburg | Jun 1 | Sep 14 | 5a |
Nearby counties
Powell County Deer Lodge County Ravalli County Missoula County Silver Bow County Lewis and Clark County
All Montana counties · Download Montana frost dates (CSV)
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