Ephrata Average Temperature by Month

This page shows the average temperature in each month of the year in Ephrata, Washington. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Ephrata?
In Ephrata, Washington, the warmest month is July, with an average daily high temperature of 89.6 °F and an average low of 61.6 °F.
What's the Coldest Month in Ephrata?
In Ephrata, Washington, the coolest month is January, with an average daily high temperature of 36.0 °F and an average low of 23.9 °F.
Month Avg. High Avg. Low
January 36.0 °F 23.9 °F
February 43.5 °F 27.0 °F
March 54.3 °F 32.3 °F
April 63.4 °F 38.7 °F
May 73.6 °F 47.8 °F
June 80.4 °F 54.8 °F
July 89.6 °F 61.6 °F
August 88.3 °F 59.8 °F
September 78.8 °F 50.9 °F
October 62.8 °F 39.8 °F
November 46.1 °F 29.8 °F
December 35.8 °F 24.0 °F
Year 62.8 °F 40.9 °F
Weather Station Details
Years Station Coordinates
1949–2024 Ephrata Municipal Airport location
1903–1948 Ephrata location