Los Altos California Climate Data

Monthly Average Climate Data for Los Altos California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January41.3 °F59.1 °F3.42 in.
February43.1 °F61.8 °F3.68 in.
March45.1 °F65.3 °F2.4 in.
April46.8 °F68.6 °F1.21 in.
May50.3 °F73.4 °F0.43 in.
June53.3 °F78.6 °F0.12 in.
July55.9 °F81.3 °F0.0 in.
August56.0 °F80.9 °F0.03 in.
September54.8 °F80.3 °F0.08 in.
October51.0 °F75.3 °F0.67 in.
November45.0 °F65.4 °F1.57 in.
December41.0 °F58.8 °F3.29 in.
Annual48.6 °F70.7 °F16.9 in.

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 : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
2024 plantmaps.com