Randolph County, Illinois
Local growing conditions for Randolph County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 11 ZIP codes in our data.
Hardiness zones in Randolph County
Randolph County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Randolph County for its live forecast, frost dates, and planting calendar:
Sparta 62286
Baldwin 62217
Chester 62233
Ellis Grove 62241
Evansville 62242
Ste. Genevieve 62261
Percy 62272
Prairie du Rocher 62277
Steeleville 62288
Tilden 62292
Ellis Grove 62297
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.