San Mateo County, California
Local growing conditions for San Mateo County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 30 ZIP codes in our data.
Hardiness zones in San Mateo County
San Mateo County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in San Mateo County for its live forecast, frost dates, and planting calendar:
Belmont 94002
Brisbane 94005
Hillsborough 94010
Daly City 94014
Daly City 94015
El Granada 94018
Half Moon Bay 94019
La Honda 94020
Loma Mar 94021
Menlo Park 94025
Atherton 94027
Portola Valley 94028
Millbrae 94030
Montara 94037
El Granada 94038
Pacifica 94044
Loma Mar 94060
Redwood City 94061
Woodside 94062
Redwood City 94063
Redwood City 94065
San Bruno 94066
San Carlos 94070
La Honda 94074
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.