Lassen County, California
Local growing conditions for Lassen County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 16 ZIP codes in our data.
Hardiness zones in Lassen County
Lassen County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Lassen County for its live forecast, frost dates, and planting calendar:
Adin 96006
Bieber 96009
McArthur 96056
Nubieber 96068
Doyle 96109
Herlong 96113
Janesville 96114
Litchfield 96117
Madeline 96119
Milford 96121
Janesville 96128
Susanville 96130
Warner Valley 96137
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.