Williamson County, Tennessee
Local growing conditions for Williamson 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 Williamson County
Williamson County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Williamson County for its live forecast, frost dates, and planting calendar:
Brentwood 37027
Smyrna 37014
Eagleville 37046
Fairview 37062
Thompson's Station 37064
Franklin 37067
Franklin 37069
Nolensville 37135
Thompson's Station 37179
Bon Aqua Junction 38476
More for Tennessee
- Agriculture in Tennessee
- Frost dates across Tennessee
- 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.