Marion County, Illinois
Local growing conditions for Marion 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 Marion County
Marion County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Marion County for its live forecast, frost dates, and planting calendar:
Centralia 62801
Alma 62807
Iuka 62849
Kell 62853
Kinmundy 62854
Odin 62870
Patoka 62875
Salem 62881
Sandoval 62882
Vernon 62892
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.