Clay County, Iowa
Local growing conditions for Clay 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 Clay County
Clay County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Clay County for its live forecast, frost dates, and planting calendar:
Linn Grove 51033
Peterson 51047
Spencer 51301
Dickens 51333
Everly 51338
Fostoria 51340
Gillett Grove 51341
Greenville 51343
Royal 51357
Webb 51366
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.