Chelan Washington Climate Data

Monthly Average Climate Data for Chelan Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.1 °F33.9 °F1.59 in.
February26.8 °F41.0 °F1.0 in.
March32.8 °F52.2 °F1.06 in.
April39.1 °F62.1 °F0.8 in.
May46.5 °F72.1 °F0.91 in.
June52.7 °F78.6 °F0.71 in.
July58.9 °F88.1 °F0.33 in.
August58.4 °F87.6 °F0.24 in.
September50.8 °F77.8 °F0.33 in.
October40.5 °F61.8 °F0.96 in.
November31.9 °F45.1 °F1.46 in.
December25.2 °F34.5 °F1.69 in.
Annual40.6 °F61.2 °F11.08 in.

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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer