Frost dates in McCone County, Montana
The average last spring frost in McCone County falls May 8 to May 20 and the average first fall frost Sep 19 to Oct 1, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a. Places: Brockway, Circle, Vida. 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 |
|---|---|---|---|---|
| 59214 | Brockway | May 20 | Sep 19 | 4a |
| 59215 | Circle | May 17 | Sep 22 | 4a |
| 59223 | May 8 | Oct 1 | 4a | |
| 59274 | Vida | May 16 | Sep 22 | 4a |
Nearby counties
Dawson County Roosevelt County Garfield County Valley County Prairie County Richland County
All Montana counties · Download Montana frost dates (CSV)
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