Frost dates in Fergus County, Montana
The average last spring frost in Fergus County falls May 14 to Jun 1 and the average first fall frost Sep 11 to Sep 25, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b. Places: Ayers Ranch Colony, Coffee Creek, Denton, Hilger, Lewistown, Moore. 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 |
|---|---|---|---|---|
| 59032 | Ayers Ranch Colony | May 20 | Sep 24 | 4b |
| 59424 | Coffee Creek | Jun 1 | Sep 11 | 4b |
| 59430 | Denton | Jun 1 | Sep 11 | 4b |
| 59441 | May 19 | Sep 25 | 4b | |
| 59451 | Hilger | May 16 | Sep 23 | 4b |
| 59457 | Lewistown | May 23 | Sep 21 | 4b |
| 59464 | Moore | Jun 1 | Sep 15 | 4b |
| 59471 | Roy | May 14 | Sep 24 | 4b |
| 59489 | Winifred | May 16 | Sep 23 | 4b |
Nearby counties
Judith Basin County Petroleum County Wheatland County Golden Valley County Musselshell County Chouteau County
All Montana counties · Download Montana frost dates (CSV)
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