Wallula Washington Climate Data

Monthly Average Climate Data for Wallula Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.3 °C5.5 °C29.46 mm
February-0.6 °C8.8 °C21.34 mm
March2.1 °C14.1 °C19.3 mm
April5 °C18.4 °C18.54 mm
May8.9 °C23.4 °C22.1 mm
June12.2 °C27.1 °C17.02 mm
July15.3 °C32.3 °C5.08 mm
August14.8 °C31.6 °C5.84 mm
September10.5 °C26.4 °C7.37 mm
October5.5 °C18.5 °C19.05 mm
November1.5 °C10.4 °C25.15 mm
December-1.3 °C5.3 °C30.23 mm
Annual6.1 °C18.5 °C220.48 mm

Climate Data for Wallula Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 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 ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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