Keokuk County, Iowa
Local growing conditions for Keokuk County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 14 ZIP codes in our data.
Hardiness zones in Keokuk County
Keokuk County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Keokuk County for its live forecast, frost dates, and planting calendar:
Gibson 50104
Thornburg 50136
Thornburg 50255
What Cheer 50268
Harper 52231
South English 52335
Webster 52355
Delta 52550
Hayesville 52562
Hedrick 52563
Martinsburg 52568
Ollie 52576
Richland 52585
Sigourney 52591
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.