Yountville California Climate Data

Monthly Average Climate Data for Yountville California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.3 °C14.4 °C140.72 mm
February4.4 °C16.2 °C157.99 mm
March5.4 °C18.4 °C98.81 mm
April6.3 °C22.1 °C49.02 mm
May8.7 °C23.7 °C30.23 mm
June10.5 °C28.6 °C3.05 mm
July11.7 °C29.6 °C0 mm
August11.8 °C29 °C0.51 mm
September10.3 °C29.3 °C3.3 mm
October8.3 °C25.7 °C31.75 mm
November5.2 °C18.7 °C83.06 mm
December3.3 °C14.3 °C168.91 mm
Annual7.4 °C22.5 °C767.35 mm

Climate Data for Yountville 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 ClassificationCsb - Warm-Summer Mediterranean Climate
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