Buchanan County, Iowa
Local growing conditions for Buchanan 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 Buchanan County
Buchanan County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Buchanan County for its live forecast, frost dates, and planting calendar:
Aurora 50607
Fairbank 50629
Hazleton 50641
Independence 50644
Lamont 50650
Masonville 50654
Winthrop 50682
Brandon 52210
Quasqueton 52326
Rowley 52329
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.