Yountville California Climate Data

Monthly Average Climate Data for Yountville California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January38.0 °F57.9 °F5.54 in.
February39.9 °F61.2 °F6.22 in.
March41.7 °F65.2 °F3.89 in.
April43.4 °F71.8 °F1.93 in.
May47.7 °F74.6 °F1.19 in.
June50.9 °F83.5 °F0.12 in.
July53.0 °F85.3 °F0.0 in.
August53.2 °F84.2 °F0.02 in.
September50.6 °F84.8 °F0.13 in.
October46.9 °F78.2 °F1.25 in.
November41.3 °F65.6 °F3.27 in.
December37.9 °F57.7 °F6.65 in.
Annual45.4 °F72.5 °F30.21 in.

Climate Data for Yountville 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 ClassificationCsb - Warm-Summer Mediterranean Climate
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