Marin County, California
Local growing conditions for Marin County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 29 ZIP codes in our data.
Hardiness zones in Marin County
Marin County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Marin County for its live forecast, frost dates, and planting calendar:
San Rafael 94901
San Rafael 94903
Kentfield 94904
Tiburon 94920
Bolinas 94924
Corte Madera 94925
Dillon Beach 94929
Fairfax 94930
Lagunitas-Forest Knolls 94933
Inverness 94937
Lagunitas-Forest Knolls 94938
Larkspur 94939
Tomales 94940
Mill Valley 94941
Novato 94945
Nicasio 94946
Novato 94947
Novato 94949
Lagunitas-Forest Knolls 94950
Petaluma Center 94952
Inverness 94956
Ross 94957
San Anselmo 94960
San Geronimo 94963
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.