Chewelah Washington Climate Data

Monthly Average Climate Data for Chewelah Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.4 °C1.1 °C67.56 mm
February-5.2 °C5 °C46.48 mm
March-2.1 °C10.5 °C56.64 mm
April0.6 °C15.8 °C39.88 mm
May4.8 °C21.3 °C49.28 mm
June7.7 °C24.6 °C46.48 mm
July10 °C30.4 °C20.57 mm
August9.2 °C30.7 °C13.46 mm
September5.3 °C24.8 °C17.78 mm
October0.7 °C15.7 °C41.4 mm
November-2.2 °C6.3 °C65.28 mm
December-5.8 °C1 °C72.39 mm
Annual1.5 °C15.6 °C537.2 mm

Climate Data for Chewelah Washington

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer