Grand Mound Washington Climate Data

Monthly Average Climate Data for Grand Mound Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.6 °C8.2 °C191.01 mm
February1.3 °C10 °C131.06 mm
March2.3 °C12.5 °C138.18 mm
April3.8 °C15.4 °C97.28 mm
May6.8 °C19.3 °C59.18 mm
June9.2 °C21.8 °C43.69 mm
July11.2 °C25.5 °C14.48 mm
August11.2 °C26.1 °C22.35 mm
September8.9 °C22.9 °C45.21 mm
October5.8 °C16.6 °C130.05 mm
November2.9 °C10.8 °C226.31 mm
December1.3 °C7.7 °C208.03 mm
Annual5.5 °C16.4 °C1306.83 mm

Climate Data for Grand Mound Washington

Average First Frost DateOct. 21 - Oct. 31
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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