Whiteside County, Illinois
Local growing conditions for Whiteside 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 Whiteside County
Whiteside County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Whiteside County for its live forecast, frost dates, and planting calendar:
Galt 61037
Rock Falls 61071
Sterling 61081
Albany 61230
Deer Grove 61243
Erie 61250
Erie 61251
Fulton 61252
Lyndon 61261
Morrison 61270
Prophetstown 61277
Tampico 61283
More for Illinois
- Agriculture in Illinois
- Frost dates across Illinois
- 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.