Walnut California Climate Data

Monthly Average Climate Data for Walnut California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January45.1 °F68.7 °F3.89 in.
February45.9 °F68.9 °F4.13 in.
March48.0 °F71.5 °F2.33 in.
April50.5 °F74.6 °F0.76 in.
May54.9 °F77.9 °F0.37 in.
June58.4 °F83.4 °F0.12 in.
July62.5 °F90.0 °F0.05 in.
August62.9 °F91.9 °F0.02 in.
September61.1 °F89.3 °F0.14 in.
October56.0 °F82.4 °F0.66 in.
November49.2 °F74.8 °F0.97 in.
December44.5 °F68.0 °F2.69 in.
Annual53.3 °F78.5 °F16.13 in.

Climate Data for Walnut California

Average First Frost DateJan. 21 - Jan. 31
Average Last Frost DateJan. 21 - Jan. 31
Average Days With FrostFrost Rare
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
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