Chouteau County, Montana
Local growing conditions for Chouteau 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 Chouteau County
Chouteau County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Chouteau County for its live forecast, frost dates, and planting calendar:
Carter 59420
Floweree 59440
Fort Benton 59442
Geraldine 59446
Highwood 59450
Loma 59460
Big Sandy 59520
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.