Frost dates in Blaine County, Montana
The average last spring frost in Blaine County falls May 14 to May 23 and the average first fall frost Sep 21 to Sep 23, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 3b to 4b. Places: Chinook, Fort Belknap Agency, Hays, Hogeland, Turner Colony, Zurich. 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 |
|---|---|---|---|---|
| 59523 | Chinook | May 14 | Sep 23 | 3b |
| 59526 | Fort Belknap Agency | May 16 | Sep 21 | 4a |
| 59527 | Hays | May 23 | Sep 23 | 4b |
| 59529 | Hogeland | May 16 | Sep 21 | 4a |
| 59535 | May 23 | Sep 23 | 4b | |
| 59542 | Turner Colony | May 19 | Sep 21 | 4a |
| 59547 | Zurich | May 14 | Sep 23 | 3b |
Nearby counties
Phillips County Hill County Fergus County Chouteau County Petroleum County Liberty County
All Montana counties · Download Montana frost dates (CSV)
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