Rainier Washington Climate Data

Monthly Average Climate Data for Rainier Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.1 °C7.9 °C180.34 mm
February0.9 °C9.6 °C122.68 mm
March2.1 °C11.9 °C138.94 mm
April3.7 °C14.8 °C101.6 mm
May6.7 °C18.8 °C60.96 mm
June9.2 °C21.3 °C51.05 mm
July11.2 °C25.2 °C17.02 mm
August11.2 °C25.7 °C26.67 mm
September8.8 °C22.3 °C49.53 mm
October5.5 °C15.9 °C121.16 mm
November2.6 °C10.4 °C210.82 mm
December0.9 °C7.3 °C191.52 mm
Annual5.3 °C15.9 °C1272.29 mm

Climate Data for Rainier 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 8a : -12.2°C to -9.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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