Iroquois County, Illinois
Local growing conditions for Iroquois County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 23 ZIP codes in our data.
Hardiness zones in Iroquois County
Iroquois County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Iroquois County for its live forecast, frost dates, and planting calendar:
Watseka 60970
Ashkum 60911
Beaverville 60912
Buckley 60918
Cissna Park 60924
Cissna Park 60926
Clifton 60927
Crescent City 60928
Danforth 60930
Donovan 60931
Gilman 60938
Wellington 60939
Iroquois 60945
Loda 60948
Martinton 60951
Milford 60953
Onarga 60955
Papineau 60956
Sheldon 60966
Milford 60967
Thawville 60968
Wellington 60973
Woodland 60974
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.