Chelan Washington Climate Data

Monthly Average Climate Data for Chelan Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.4 °C1.1 °C40.39 mm
February-2.9 °C5 °C25.4 mm
March0.4 °C11.2 °C26.92 mm
April3.9 °C16.7 °C20.32 mm
May8.1 °C22.3 °C23.11 mm
June11.5 °C25.9 °C18.03 mm
July14.9 °C31.2 °C8.38 mm
August14.7 °C30.9 °C6.1 mm
September10.4 °C25.4 °C8.38 mm
October4.7 °C16.6 °C24.38 mm
November-0.1 °C7.3 °C37.08 mm
December-3.8 °C1.4 °C42.93 mm
Annual4.8 °C16.3 °C281.42 mm

Climate Data for Chelan Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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