River Road Washington Climate Data

Monthly Average Climate Data for River Road Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.8 °C7.4 °C66.04 mm
February1.7 °C8.5 °C51.56 mm
March2.7 °C10.7 °C49.78 mm
April4.6 °C14.6 °C38.61 mm
May7.2 °C18.1 °C34.54 mm
June9.4 °C19.7 °C29.21 mm
July11.3 °C22.2 °C16.76 mm
August11.4 °C22.6 °C15.49 mm
September9.8 °C20.1 °C24.64 mm
October6.5 °C15.7 °C47.24 mm
November3.5 °C9.9 °C77.98 mm
December1.6 °C7.3 °C70.36 mm
Annual6 °C14.7 °C522.21 mm

Climate Data for River Road Washington

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 8a : -12.2°C to -9.4°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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