Benton County, Iowa
Local growing conditions for Benton County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 16 ZIP codes in our data.
Hardiness zones in Benton County
Benton County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Benton County for its live forecast, frost dates, and planting calendar:
Vinton 52349
Atkins 52206
Belle Plaine 52208
Blairstown 52209
Dysart 52224
Garrison 52229
Keystone 52249
Luzerne 52257
Mount Auburn 52313
Newhall 52315
Norway 52318
Shellsburg 52332
Urbana 52345
Van Horne 52346
Walford 52351
Watkins 52354
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.