Marshall County, Illinois
Local growing conditions for Marshall County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 8 ZIP codes in our data.
Hardiness zones in Marshall County
Marshall County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Marshall County for its live forecast, frost dates, and planting calendar:
Toluca 61369
Varna 61375
Bradford 61424
Princeville 61479
Henry 61537
Lacon 61540
La Rose 61541
Sparland 61565
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.