Kelso Washington Climate Data

Monthly Average Climate Data for Kelso Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January2 °C8.2 °C166.37 mm
February1.7 °C10.2 °C120.4 mm
March3.1 °C12.7 °C125.98 mm
April4.9 °C15.4 °C104.14 mm
May7.9 °C19.1 °C74.17 mm
June10.2 °C21.4 °C51.31 mm
July12.3 °C24.9 °C15.75 mm
August12.2 °C25.7 °C23.62 mm
September10.1 °C23.2 °C47.5 mm
October6.7 °C16.9 °C112.52 mm
November3.8 °C11.2 °C181.61 mm
December1.8 °C7.7 °C184.4 mm
Annual6.4 °C16.4 °C1207.77 mm

Climate Data for Kelso Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°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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