Hamilton County, Iowa
Local growing conditions for Hamilton 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 Hamilton County
Hamilton County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Hamilton County for its live forecast, frost dates, and planting calendar:
Blairsburg 50034
Ellsworth 50075
Jewell Junction 50130
Kamrar 50132
Randall 50231
Stanhope 50246
Stratford 50249
Williams 50271
Webster City 50595
More for Iowa
- Agriculture in Iowa
- Frost dates across Iowa
- 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.