Cowiche Washington Climate Data

Monthly Average Climate Data for Cowiche Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.8 °C2.9 °C42.67 mm
February-3.4 °C6.5 °C29.21 mm
March-0.9 °C11.2 °C24.13 mm
April1.8 °C15.6 °C16 mm
May5.8 °C20.7 °C21.34 mm
June8.9 °C24.4 °C14.48 mm
July12.2 °C29.4 °C9.4 mm
August11.7 °C29 °C3.81 mm
September7.6 °C24.2 °C8.38 mm
October2.2 °C16.2 °C22.86 mm
November-2.2 °C8.1 °C23.37 mm
December-5.2 °C2.3 °C41.91 mm
Annual2.8 °C15.9 °C257.56 mm

Climate Data for Cowiche Washington

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 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 ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate