Rosemont California Climate Data

Monthly Average Climate Data for Rosemont California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.1 °C13.1 °C99.57 mm
February5.2 °C15.9 °C98.55 mm
March6.9 °C18.8 °C78.99 mm
April8.3 °C22 °C45.21 mm
May11.2 °C26.5 °C25.4 mm
June13.8 °C30.8 °C5.08 mm
July15.4 °C33.9 °C0.25 mm
August15.1 °C33.3 °C0.51 mm
September13.6 °C31.4 °C3.3 mm
October10.2 °C25.8 °C35.05 mm
November5.9 °C18.2 °C50.8 mm
December3.8 °C13.2 °C103.38 mm
Annual9.5 °C23.6 °C546.09 mm

Climate Data for Rosemont California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateMar. 1 - Mar. 10
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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