Wilton California Climate Data

Monthly Average Climate Data for Wilton California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.1 °C13.1 °C98.81 mm
February5.3 °C16 °C98.3 mm
March6.9 °C18.8 °C75.69 mm
April8.3 °C21.9 °C41.15 mm
May11.2 °C26.4 °C24.64 mm
June13.8 °C30.7 °C4.83 mm
July15.3 °C33.8 °C0 mm
August15.1 °C33.2 °C0.76 mm
September13.6 °C31.3 °C3.05 mm
October10.2 °C25.7 °C25.65 mm
November6 °C18.2 °C48.01 mm
December3.8 °C13.3 °C94.49 mm
Annual9.5 °C23.5 °C515.38 mm

Climate Data for Wilton California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateMar. 1 - Mar. 10
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
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