Iowa County, Iowa
Local growing conditions for Iowa 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 Iowa County
Iowa County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Iowa County for its live forecast, frost dates, and planting calendar:
Amana 52203
Conroy 52220
Homestead 52236
Ladora 52251
Marengo 52301
Middle Amana 52307
Millersburg 52308
North English 52316
Parnell 52325
South Amana 52334
Victor 52347
Williamsburg 52361
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.