Madison County, Iowa
Local growing conditions for Madison County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 12 ZIP codes in our data.
Hardiness zones in Madison County
Madison County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Madison County for its live forecast, frost dates, and planting calendar:
Bevington 50033
Cumming 50061
Dexter 50070
Earlham 50072
Lorimor 50149
Macksburg 50155
Patterson 50218
East Peru 50222
St. Charles 50240
Truro 50257
Van Meter 50261
Winterset 50273
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.