Potrero California Climate Data

Monthly Average Climate Data for Potrero California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January38.6 °F64.7 °F2.89 in.
February38.8 °F63.9 °F3.84 in.
March40.0 °F67.5 °F2.62 in.
April41.8 °F71.0 °F1.18 in.
May46.1 °F76.2 °F0.46 in.
June50.5 °F84.6 °F0.08 in.
July57.8 °F91.1 °F0.26 in.
August58.9 °F92.9 °F0.12 in.
September55.6 °F89.5 °F0.25 in.
October48.8 °F80.3 °F0.69 in.
November42.6 °F71.7 °F1.39 in.
December38.2 °F63.9 °F2.57 in.
Annual46.5 °F76.4 °F16.35 in.

Climate Data for Potrero California

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost30-40 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 9a : 20°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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