Graham Washington Climate Data

Monthly Average Climate Data for Graham Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.1 °C7.7 °C164.34 mm
February1 °C9.2 °C110.49 mm
March2.2 °C11.6 °C128.27 mm
April3.9 °C14.3 °C89.41 mm
May7 °C18.2 °C76.2 mm
June9.4 °C20.7 °C61.72 mm
July11.4 °C24.6 °C25.15 mm
August11.6 °C25.2 °C30.73 mm
September9.2 °C21.8 °C38.35 mm
October5.8 °C15.6 °C117.6 mm
November2.8 °C10.3 °C168.4 mm
December0.8 °C7.2 °C145.03 mm
Annual5.5 °C15.5 °C1155.69 mm

Climate Data for Graham Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
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 ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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