Antioch California Climate Data

Monthly Average Climate Data for Antioch California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.3 °C13.2 °C74.68 mm
February5.7 °C15.9 °C71.88 mm
March7.4 °C18.6 °C49.02 mm
April9.1 °C21.1 °C26.92 mm
May11.6 °C24.6 °C12.7 mm
June13.8 °C28.3 °C3.05 mm
July14.8 °C31.1 °C0 mm
August14.9 °C30.4 °C1.02 mm
September14 °C29.1 °C1.78 mm
October11.2 °C24.8 °C16.26 mm
November6.8 °C18.2 °C37.59 mm
December4.2 °C13.3 °C71.63 mm
Annual9.8 °C22.4 °C366.53 mm

Climate Data for Antioch California

Average First Frost DateDec. 1 - Dec. 10
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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