Henry County, Illinois
Local growing conditions for Henry 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 Henry County
Henry County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Henry County for its live forecast, frost dates, and planting calendar:
Galva 61434
Andover 61233
Annawan 61234
Atkinson 61235
Cambridge 61238
Colona 61241
Geneseo 61254
Hooppole 61258
Lynn Center 61262
Orion 61273
Osco 61274
Alpha 61413
Bishop Hill 61419
Kewanee 61443
Ophiem 61468
Woodhull 61490
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.