Henry County, Iowa
Local growing conditions for Henry County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 8 ZIP codes in our data.
Hardiness zones in Henry County
Henry County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Henry County for its live forecast, frost dates, and planting calendar:
Mount Pleasant 52641
Mount Union 52644
New London 52645
Olds 52647
Salem 52649
Swedesburg 52652
Wayland 52654
Winfield 52659
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.