Frost dates in Lake County, Montana
The average last spring frost in Lake County falls May 1 to May 17 and the average first fall frost Sep 19 to Oct 15, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b to 6a. Places: Big Arm, Bigfork, Dayton, Elmo, Kicking Horse, Lake Mary Ronan. 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 |
|---|---|---|---|---|
| 59824 | Kicking Horse | May 12 | Oct 2 | 6a |
| 59855 | Pablo | May 10 | Oct 5 | 6a |
| 59860 | Polson | May 10 | Oct 5 | 6a |
| 59863 | Ravalli | May 12 | Oct 2 | 6a |
| 59864 | Pablo | May 10 | Oct 5 | 6a |
| 59865 | St. Ignatius | May 12 | Oct 2 | 6a |
| 59910 | Big Arm | May 15 | Sep 28 | 6a |
| 59911 | Bigfork | May 17 | Sep 19 | 5b |
| 59914 | Dayton | May 1 | Oct 15 | 6a |
| 59915 | Elmo | May 15 | Sep 28 | 6a |
| 59929 | Lake Mary Ronan | May 1 | Oct 15 | 6a |
| 59931 | Rollins | May 1 | Oct 15 | 6a |
Nearby counties
Sanders County Flathead County Missoula County Mineral County Lincoln County Granite County
All Montana counties · Download Montana frost dates (CSV)
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