South San Francisco California Climate Data

Monthly Average Climate Data for South San Francisco California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January44.8 °F57.8 °F4.47 in.
February46.3 °F60.2 °F4.69 in.
March47.7 °F62.3 °F3.3 in.
April48.8 °F63.5 °F1.7 in.
May51.5 °F65.5 °F0.69 in.
June53.6 °F68.2 °F0.18 in.
July55.3 °F69.4 °F0.08 in.
August56.2 °F70.2 °F0.07 in.
September55.9 °F73.0 °F0.08 in.
October53.4 °F71.2 °F0.92 in.
November48.6 °F63.7 °F2.18 in.
December44.9 °F58.2 °F4.64 in.
Annual50.6 °F65.3 °F23 in.

Climate Data for South San Francisco California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10b : 35°F to 30°F
Plant Hardiness Zone - 2012Zone 10b : 35°F to 30°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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