Alamo California Climate Data

Monthly Average Climate Data for Alamo California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.5 °C13.8 °C131.57 mm
February5.3 °C16.1 °C130.56 mm
March6.5 °C18.4 °C94.49 mm
April7.7 °C20.9 °C44.96 mm
May9.9 °C23.4 °C22.61 mm
June11.9 °C27.4 °C3.56 mm
July13.3 °C30 °C0.51 mm
August13.4 °C30 °C1.02 mm
September12.7 °C29.2 °C2.29 mm
October10.4 °C24.3 °C28.19 mm
November6.4 °C18.2 °C58.67 mm
December4.2 °C13.8 °C133.6 mm
Annual8.9 °C22.1 °C652.03 mm

Climate Data for Alamo California

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 21 - Feb. 29
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 ClassificationCsb - Warm-Summer Mediterranean Climate
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