Fergus County, Montana
Local growing conditions for Fergus County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 9 ZIP codes in our data.
Hardiness zones in Fergus County
Fergus County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Fergus County for its live forecast, frost dates, and planting calendar:
Grass Range 59032
Coffee Creek 59424
Denton 59430
Ayers Ranch Colony 59441
Hilger 59451
Warm Spring Creek 59457
Moore 59464
Roy 59471
Winifred 59489
More for Montana
- Agriculture in Montana
- Frost dates across Montana
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.