Fontana California Climate Data

Monthly Average Climate Data for Fontana California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January44.0 °F66.8 °F3.16 in.
February44.6 °F67.1 °F3.94 in.
March47.0 °F70.5 °F2.42 in.
April49.5 °F74.8 °F0.79 in.
May53.8 °F79.4 °F0.33 in.
June57.8 °F86.3 °F0.09 in.
July63.0 °F93.1 °F0.05 in.
August64.0 °F94.6 °F0.05 in.
September61.8 °F91.3 °F0.14 in.
October55.5 °F82.3 °F0.63 in.
November48.3 °F73.8 °F0.9 in.
December43.4 °F65.9 °F2.23 in.
Annual52.7 °F78.8 °F14.73 in.

Climate Data for Fontana California

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 10a : 30°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate