Rio Oso California Climate Data

Monthly Average Climate Data for Rio Oso California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.6 °C13 °C100.33 mm
February4.8 °C16 °C87.63 mm
March6.3 °C18.8 °C73.41 mm
April7.8 °C21.9 °C35.81 mm
May11.1 °C26.5 °C21.59 mm
June14 °C30.9 °C4.57 mm
July15.7 °C34 °C0 mm
August15 °C33.5 °C1.27 mm
September13.3 °C31.1 °C3.3 mm
October9.6 °C25.7 °C21.59 mm
November5.3 °C18.1 °C52.07 mm
December3.2 °C13.1 °C94.74 mm
Annual9.1 °C23.6 °C496.31 mm

Climate Data for Rio Oso California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
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