Westmont California Climate Data

Monthly Average Climate Data for Westmont California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January9.3 °C19.3 °C85.85 mm
February9.7 °C19.1 °C93.47 mm
March10.7 °C19.6 °C58.67 mm
April11.8 °C21.2 °C17.78 mm
May13.8 °C22.2 °C7.11 mm
June15.6 °C23.7 °C1.52 mm
July17.3 °C26.2 °C1.02 mm
August17.7 °C27.2 °C0.51 mm
September17.1 °C26.8 °C3.05 mm
October14.9 °C24.9 °C14.48 mm
November11.6 °C22 °C18.8 mm
December9.1 °C19.2 °C60.2 mm
Annual13.2 °C22.6 °C362.46 mm

Climate Data for Westmont California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10b : 1.7°C to 4.4°C
Plant Hardiness Zone - 2012Zone 10b : 1.7°C to 4.4°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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