Hill County, Montana
Local growing conditions for Hill County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 7 ZIP codes in our data.
Hardiness zones in Hill County
Hill County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Hill County for its live forecast, frost dates, and planting calendar:
Hilldale Colony 59501
Rocky Boy West 59521
Gildford 59525
Hingham 59528
Inverness 59530
Kremlin 59532
Rudyard 59540
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.