Sonoma County, California
Local growing conditions for Sonoma County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 38 ZIP codes in our data.
Hardiness zones in Sonoma County
Sonoma County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Sonoma County for its live forecast, frost dates, and planting calendar:
Graton 95444
Calistoga 94515
Bodega 94922
Bodega Bay 94923
Rohnert Park 94928
Cotati 94931
Penngrove 94951
Petaluma 94954
Bodega 94972
Santa Rosa 95401
Larkfield-Wikiup 95403
Larkfield-Wikiup 95404
Santa Rosa 95405
Santa Rosa 95407
Santa Rosa 95409
Sea Ranch 95412
Occidental 95419
Timber Cove 95421
Cloverdale 95425
Monte Rio 95430
Eldridge 95431
Forestville 95436
Fulton 95439
Cloverdale 95441
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.