Fontana California Climate Data

Monthly Average Climate Data for Fontana California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January6.7 °C19.3 °C80.26 mm
February7 °C19.5 °C100.08 mm
March8.3 °C21.4 °C61.47 mm
April9.7 °C23.8 °C20.07 mm
May12.1 °C26.3 °C8.38 mm
June14.3 °C30.2 °C2.29 mm
July17.2 °C33.9 °C1.27 mm
August17.8 °C34.8 °C1.27 mm
September16.6 °C32.9 °C3.56 mm
October13.1 °C27.9 °C16 mm
November9.1 °C23.2 °C22.86 mm
December6.3 °C18.8 °C56.64 mm
Annual11.5 °C26 °C374.15 mm

Climate Data for Fontana California

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With Frost10-20 Days
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 ClassificationCsa - Hot-Summer Mediterranean Climate
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