Inchelium Washington Climate Data

Monthly Average Climate Data for Inchelium Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.9 °C1.4 °C51.82 mm
February-4.7 °C4.8 °C38.1 mm
March-1.7 °C10.7 °C46.99 mm
April1.2 °C16.3 °C33.53 mm
May5.4 °C21.9 °C35.81 mm
June8.6 °C25.1 °C30.48 mm
July11.1 °C30.8 °C15.75 mm
August10.4 °C30.8 °C10.41 mm
September6.6 °C25.1 °C16.51 mm
October1.8 °C15.6 °C37.34 mm
November-1.6 °C6.5 °C52.32 mm
December-4.9 °C1.4 °C67.56 mm
Annual2.3 °C15.9 °C436.62 mm

Climate Data for Inchelium Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year