Ephrata Washington Climate Data

Monthly Average Climate Data for Ephrata Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.5 °C2.2 °C24.38 mm
February-2.9 °C6.2 °C18.03 mm
March-0.2 °C11.9 °C19.05 mm
April2.8 °C17.1 °C17.02 mm
May7.4 °C22.5 °C16.51 mm
June10.8 °C26.3 °C16.76 mm
July14.3 °C31.4 °C7.37 mm
August13.7 °C30.8 °C4.57 mm
September9.2 °C25.7 °C6.35 mm
October3.6 °C17.2 °C17.02 mm
November-1.4 °C8.1 °C23.62 mm
December-4.6 °C2.1 °C31.5 mm
Annual4 °C16.8 °C202.18 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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