Ross California Climate Data

Monthly Average Climate Data for Ross California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January5.4 °C13.5 °C218.19 mm
February6.3 °C15.7 °C213.87 mm
March6.9 °C17.4 °C142.24 mm
April7.8 °C19.1 °C61.72 mm
May9.3 °C21.8 °C30.23 mm
June10.9 °C24.8 °C6.35 mm
July11.8 °C26.5 °C0.25 mm
August12.2 °C26.5 °C1.27 mm
September11.6 °C26.1 °C2.54 mm
October9.8 °C23.1 °C47.24 mm
November7.4 °C17.8 °C104.65 mm
December5.2 °C13.7 °C225.55 mm
Annual8.7 °C20.5 °C1054.1 mm

Climate Data for Ross California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With FrostFrost Rare
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 10a : -1.1°C to 1.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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