Westmont California Climate Data

Monthly Average Climate Data for Westmont California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January48.7 °F66.7 °F3.38 in.
February49.4 °F66.4 °F3.68 in.
March51.3 °F67.3 °F2.31 in.
April53.3 °F70.2 °F0.7 in.
May56.8 °F71.9 °F0.28 in.
June60.1 °F74.6 °F0.06 in.
July63.2 °F79.2 °F0.04 in.
August63.9 °F81.0 °F0.02 in.
September62.8 °F80.3 °F0.12 in.
October58.8 °F76.9 °F0.57 in.
November52.8 °F71.6 °F0.74 in.
December48.3 °F66.5 °F2.37 in.
Annual55.8 °F72.7 °F14.27 in.

Climate Data for Westmont California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10b : 35°F to 30°F
Plant Hardiness Zone - 2012Zone 10b : 35°F to 30°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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