Los Altos California Climate Data

Monthly Average Climate Data for Los Altos California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January5.2 °C15.1 °C86.87 mm
February6.2 °C16.6 °C93.47 mm
March7.3 °C18.5 °C60.96 mm
April8.2 °C20.3 °C30.73 mm
May10.2 °C23 °C10.92 mm
June11.8 °C25.9 °C3.05 mm
July13.3 °C27.4 °C0 mm
August13.3 °C27.2 °C0.76 mm
September12.7 °C26.8 °C2.03 mm
October10.6 °C24.1 °C17.02 mm
November7.2 °C18.6 °C39.88 mm
December5 °C14.9 °C83.57 mm
Annual9.3 °C21.5 °C429.26 mm

Climate Data for Los Altos California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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