Wilton California Climate Data

Monthly Average Climate Data for Wilton California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.4 °F55.6 °F3.89 in.
February41.5 °F60.8 °F3.87 in.
March44.5 °F65.9 °F2.98 in.
April47.0 °F71.4 °F1.62 in.
May52.1 °F79.5 °F0.97 in.
June56.8 °F87.3 °F0.19 in.
July59.5 °F92.8 °F0.0 in.
August59.1 °F91.8 °F0.03 in.
September56.5 °F88.4 °F0.12 in.
October50.3 °F78.2 °F1.01 in.
November42.8 °F64.7 °F1.89 in.
December38.8 °F56.0 °F3.72 in.
Annual49 °F74.4 °F20.29 in.

Climate Data for Wilton California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost10-20 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 ClassificationCsa - Hot-Summer Mediterranean Climate
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