Sierra County, California
Local growing conditions for Sierra 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 Sierra County
Sierra County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Sierra County for its live forecast, frost dates, and planting calendar:
Alleghany 95910
Downieville 95936
Goodyears Bar 95944
Pike 95960
Sierra Brooks 96118
Sattley 96124
Sierra City 96125
Sierraville 96126
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.