Petaluma California Climate Data

Monthly Average Climate Data for Petaluma California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.5 °C13.7 °C150.37 mm
February4.4 °C15.8 °C156.72 mm
March5.3 °C17.7 °C83.57 mm
April6.2 °C18.9 °C40.64 mm
May8.1 °C21.5 °C21.84 mm
June9.9 °C24.8 °C7.37 mm
July11.1 °C26.5 °C0.25 mm
August11.3 °C26.7 °C1.52 mm
September10.1 °C26.8 °C2.03 mm
October8 °C24 °C27.69 mm
November5.2 °C18.2 °C62.23 mm
December3.3 °C13.8 °C147.57 mm
Annual7.2 °C20.7 °C701.8 mm

Climate Data for Petaluma California

Average First Frost DateNov. 21 - Nov. 30
Average Last Frost DateMar. 11 - Mar. 20
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°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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