Hardin County, Iowa
Local growing conditions for Hardin County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 10 ZIP codes in our data.
Hardiness zones in Hardin County
Hardin County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Hardin County for its live forecast, frost dates, and planting calendar:
Iowa Falls 50126
Alden 50006
Garden City 50102
Hubbard 50122
New Providence 50206
Radcliffe 50230
Union 50258
Whitten 50269
Eldora 50627
Steamboat Rock 50672
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.