Chinook Washington Climate Data

Monthly Average Climate Data for Chinook Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.7 °C9.5 °C315.72 mm
February3.7 °C10.3 °C212.34 mm
March4.6 °C11.7 °C228.09 mm
April5.4 °C13.6 °C169.42 mm
May8.1 °C16.1 °C98.04 mm
June9.9 °C17.8 °C70.36 mm
July12.2 °C20 °C26.16 mm
August12 °C20.8 °C37.08 mm
September10.8 °C20.1 °C72.39 mm
October7.8 °C16.3 °C194.56 mm
November5.7 °C12 °C320.29 mm
December3.4 °C9.2 °C326.9 mm
Annual7.3 °C14.8 °C2071.35 mm

Climate Data for Chinook Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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