San Mateo California Climate Data

Monthly Average Climate Data for San Mateo California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January6.4 °C14.5 °C100.84 mm
February7.4 °C15.9 °C102.62 mm
March8.3 °C17.3 °C76.96 mm
April8.9 °C18.9 °C38.86 mm
May10.7 °C20.4 °C15.49 mm
June12.1 °C22.7 °C4.06 mm
July13.2 °C23.9 °C1.02 mm
August13.4 °C24.2 °C1.02 mm
September13.2 °C24.6 °C1.78 mm
October11.6 °C22.6 °C22.35 mm
November8.7 °C17.7 °C48.51 mm
December6.4 °C14.6 °C104.9 mm
Annual10 °C19.8 °C518.41 mm

Climate Data for San Mateo California

Average First Frost DateJan. 11 - Jan. 20
Average Last Frost DateJan. 21 - Jan. 31
Average Days With FrostFrost Rare
Plant Hardiness Zone - 2023Zone 10a : -1.1°C to 1.7°C
Plant Hardiness Zone - 2012Zone 10a : -1.1°C to 1.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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