Warren County, Ohio
Local growing conditions for Warren County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 12 ZIP codes in our data.
Hardiness zones in Warren County
Warren County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Warren County for its live forecast, frost dates, and planting calendar:
Franklin 45005
Harveysburg 45032
Kings Mills 45034
Lebanon 45036
Maineville 45039
Mason 45040
Lebanon 45054
South Lebanon 45065
Springboro 45066
Corwin 45068
Morrow 45152
Pleasant Plain 45162
More for Ohio
- Agriculture in Ohio
- Frost dates across Ohio
- 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.