Ephrata Washington Climate Data

Monthly Average Climate Data for Ephrata Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.9 °F36.0 °F0.96 in.
February26.8 °F43.2 °F0.71 in.
March31.6 °F53.5 °F0.75 in.
April37.1 °F62.7 °F0.67 in.
May45.3 °F72.5 °F0.65 in.
June51.4 °F79.3 °F0.66 in.
July57.7 °F88.6 °F0.29 in.
August56.7 °F87.5 °F0.18 in.
September48.6 °F78.2 °F0.25 in.
October38.4 °F62.9 °F0.67 in.
November29.5 °F46.5 °F0.93 in.
December23.7 °F35.8 °F1.24 in.
Annual39.2 °F62.2 °F7.96 in.

Climate Data for Ephrata Washington

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 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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