Frost dates in Silver Bow County, Montana
The average last spring frost in Silver Bow County falls Jun 10 to Jun 13 and the average first fall frost Sep 5 to Sep 7, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b to 5a. Places: Butte-Silver Bow (balance). 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 |
|---|---|---|---|---|
| 59701 | Butte-Silver Bow (balance) | Jun 13 | Sep 5 | 5a |
| 59727 | Butte-Silver Bow (balance) | Jun 10 | Sep 7 | 5a |
| 59748 | Butte-Silver Bow (balance) | Jun 13 | Sep 5 | 4b |
| 59750 | Butte-Silver Bow (balance) | Jun 13 | Sep 5 | 5a |
Nearby counties
Deer Lodge County Jefferson County Powell County Beaverhead County Madison County Granite County
All Montana counties · Download Montana frost dates (CSV)
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