Riverside Washington Climate Data

Monthly Average Climate Data for Riverside Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.4 °F33.9 °F1.39 in.
February25.6 °F41.1 °F1.01 in.
March31.4 °F53.5 °F1.17 in.
April37.5 °F63.9 °F0.91 in.
May44.9 °F73.6 °F1.26 in.
June51.3 °F80.3 °F1.15 in.
July57.2 °F89.6 °F0.77 in.
August56.1 °F89.2 °F0.37 in.
September47.4 °F78.9 °F0.44 in.
October37.7 °F62.2 °F0.86 in.
November29.9 °F44.9 °F1.54 in.
December24.5 °F34.7 °F1.81 in.
Annual38.9 °F62.2 °F12.68 in.

Climate Data for Riverside Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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