Frost dates for 94137 — San Francisco, CA
Gardening where frost is rare
San Francisco, CA rarely or never drops to freezing, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
How San Francisco compares
- Nearby San Jose, CA, 69 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the San Francisco Dwtn, CA weather station, about 1 km away (elevation 151 ft (46 m)).
ZIP codes in San Francisco: 94102 94103 94104 94105 94107 94108 94109 94110 94111 94112 94114 94115 94116 94117 94118 94119 94120 94121 94122 94123 94124 94125 94126 94127 94128 94129 94130 94131 94132 94133 94134 94137 94139 94140 94141 94142 94143 94144 94145 94146 94147 94151 94158 94159 94160 94161 94163 94164 94172 94177 94188
Frost dates near San Francisco
- Daly City Dec 30 · Dec 25
- Brisbane Dec 29 · Dec 26
- Sausalito rare frost
- Belvedere Tiburon Jan 4 · Jan 2
- South San Francisco Dec 29 · Dec 26
- Emeryville rare frost
- Alameda Jan 7 · Dec 23
- Oakland rare frost
Frequently asked questions
When is the last frost in San Francisco, CA?
In most years San Francisco, CA has no frost at all. The nearest NOAA station averages 0 nights a year at or below 32°F — too few to calculate a typical frost date.