San Bruno California Climate Data

Monthly Average Climate Data for San Bruno California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January6.9 °C14.4 °C109.73 mm
February7.7 °C15.7 °C112.27 mm
March8.6 °C16.9 °C80.52 mm
April9.3 °C17.7 °C41.15 mm
May10.9 °C18.8 °C15.24 mm
June12.1 °C20.4 °C4.06 mm
July13.1 °C21.1 °C1.52 mm
August13.6 °C21.6 °C1.27 mm
September13.3 °C23.1 °C2.03 mm
October11.8 °C21.9 °C22.1 mm
November9 °C17.5 °C51.56 mm
December6.9 °C14.6 °C109.22 mm
Annual10.3 °C18.6 °C550.67 mm

Climate Data for San Bruno California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
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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