San Francisco, CA planting zone & frost dates
San Francisco is in USDA hardiness zone 10b. Frost is rare here: in most years temperatures do not drop to 32°F.
Useful for zone 10b gardens
- Drip irrigation kit — saves water in long, hot seasons
- Shade cloth — protects plants from midday sun
- Soil moisture meter
- Plants for zone 10
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Hardiness zone by ZIP code in San Francisco
- 94102 zone 10b
- 94103 zone 10b
- 94104 zone 10b
- 94105 zone 10b
- 94107 zone 10b
- 94108 zone 10b
- 94109 zone 10b
- 94110 zone 10b
- 94111 zone 10b
- 94112 zone 10b
- 94114 zone 10b
- 94115 zone 10b
- 94116 zone 10b
- 94117 zone 10b
- 94118 zone 10b
- 94119 zone 10b
- 94120 zone 10b
- 94121 zone 10b
- 94122 zone 10b
- 94123 zone 10b
- 94124 zone 10b
- 94125 zone 10a
- 94126 zone 10b
- 94127 zone 10a
- 94128 zone 10a
- 94129 zone 10b
- 94130 zone 10b
- 94131 zone 10b
- 94132 zone 10b
- 94133 zone 10b
- 94134 zone 10b
- 94137 zone 10b
- 94139 zone 10b
- 94140 zone 10b
- 94141 zone 10b
- 94142 zone 10b
- 94144 zone 10b
- 94145 zone 10b
- 94146 zone 10b
- 94147 zone 10b
- 94151 zone 10b
- 94158 zone 10b
- 94159 zone 10b
- 94160 zone 10b
- 94161 zone 10b
- 94163 zone 10b
- 94164 zone 10b
- 94172 zone 10b
- 94177 zone 10b
- 94188 zone 10b
Nearby cities
- Bayview-Hunters Point zone 10b
- Daly City zone 10b
- South San Francisco zone 10b
- San Bruno zone 10a
- Emeryville zone 10a
- Oakland zone 10a
- Tamalpais-Homestead Valley zone 10a, last frost Jan 16
- Alameda zone 10a
Questions
What growing zone is San Francisco, CA?
San Francisco is in USDA Plant Hardiness Zone 10b (average extreme winter low 35°F to 40°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 10a.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station San Francisco Dwtn, CA (USW00023272), 0.8 km (0.5 mi) from the city center, elevation 46 m, based on 29 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.