Black Diamond Washington Climate Data

Monthly Average Climate Data for Black Diamond Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.1 °C7.3 °C180.09 mm
February1.1 °C8.8 °C130.56 mm
March2.2 °C11.2 °C151.89 mm
April3.9 °C14.1 °C130.3 mm
May7.1 °C18.1 °C94.23 mm
June9.4 °C20.4 °C82.55 mm
July11.5 °C24.2 °C32.26 mm
August11.7 °C24.8 °C39.62 mm
September9.3 °C21.3 °C66.8 mm
October5.8 °C15.1 °C138.18 mm
November2.9 °C9.9 °C199.9 mm
December0.7 °C6.7 °C176.53 mm
Annual5.6 °C15.2 °C1422.91 mm

Climate Data for Black Diamond Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ClassificationCfb - Temperate Oceanic Climate