South San Francisco California Climate Data

Monthly Average Climate Data for South San Francisco California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January7.1 °C14.3 °C113.54 mm
February7.9 °C15.7 °C119.13 mm
March8.7 °C16.8 °C83.82 mm
April9.3 °C17.5 °C43.18 mm
May10.8 °C18.6 °C17.53 mm
June12 °C20.1 °C4.57 mm
July12.9 °C20.8 °C2.03 mm
August13.4 °C21.2 °C1.78 mm
September13.3 °C22.8 °C2.03 mm
October11.9 °C21.8 °C23.37 mm
November9.2 °C17.6 °C55.37 mm
December7.2 °C14.6 °C117.86 mm
Annual10.3 °C18.5 °C584.21 mm

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 : 1.7°C to 4.4°C
Plant Hardiness Zone - 2012Zone 10b : 1.7°C to 4.4°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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