Lake County, California
Local growing conditions for Lake County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 14 ZIP codes in our data.
Hardiness zones in Lake County
Lake County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Lake County for its live forecast, frost dates, and planting calendar:
Clearlake 95422
Spring Valley 95423
Cobb 95426
Kelseyville 95435
Lucerne 95443
Kelseyville 95451
Lakeport 95453
Clearlake 95457
Lucerne 95458
Hidden Valley Lake 95461
Nice 95464
Hidden Valley Lake 95467
Upper Lake 95485
Upper Lake 95493
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.