Bethel Island California Climate Data

Monthly Average Climate Data for Bethel Island California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4 °C13.2 °C76.2 mm
February5.4 °C15.9 °C71.12 mm
March7.1 °C18.8 °C49.53 mm
April8.8 °C21.3 °C29.21 mm
May11.3 °C24.9 °C13.72 mm
June13.6 °C28.8 °C4.57 mm
July14.7 °C31.3 °C0 mm
August14.7 °C30.8 °C0.51 mm
September13.7 °C29.5 °C1.78 mm
October10.5 °C25.1 °C18.03 mm
November6.3 °C18.3 °C36.83 mm
December3.8 °C13.3 °C69.09 mm
Annual9.5 °C22.6 °C370.59 mm

Climate Data for Bethel Island 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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