Glenn County, California
Local growing conditions for Glenn County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 7 ZIP codes in our data.
Hardiness zones in Glenn County
Glenn County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Glenn County for its live forecast, frost dates, and planting calendar:
Artois 95913
Princeton 95920
Elk Creek 95939
Durham 95943
Hamilton City 95951
Orland 95963
Willows 95988
More for California
- Agriculture in California
- Frost dates across California
- 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.