Okanogan Washington Climate Data

Monthly Average Climate Data for Okanogan Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.7 °C1.2 °C35.31 mm
February-3.4 °C5.1 °C25.91 mm
March-0.1 °C12.2 °C29.72 mm
April3.4 °C17.9 °C22.1 mm
May7.6 °C23.4 °C29.46 mm
June11.2 °C27.1 °C25.4 mm
July14.6 °C32.3 °C13.72 mm
August14 °C32.1 °C7.87 mm
September9.2 °C26.7 °C10.92 mm
October3.7 °C17.2 °C22.1 mm
November-0.9 °C7.4 °C36.07 mm
December-4 °C1.7 °C44.96 mm
Annual4.2 °C17 °C303.54 mm

Climate Data for Okanogan Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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