Ephrata Weather Records

Ephrata, Washington weather averages and records from 1903–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Ephrata, Washington was 116 °F which occurred on June 29, 2021.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Ephrata, Washington was -24 °F which occurred on February 1, 1950.
Lowest Temperatures: All-Time By Year
Ephrata Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 36.0 23.9 61 -22 0.9
February 43.5 27.0 68 -24 0.6
March 54.3 32.3 77 2 0.7
April 63.4 38.7 94 16 0.6
May 73.6 47.8 101 28 0.8
June 80.4 54.8 116 31 0.7
July 89.6 61.6 113 40 0.3
August 88.3 59.8 115 36 0.2
September 78.8 50.9 106 20 0.2
October 62.8 39.8 90 8 0.6
November 46.1 29.8 77 -15 0.9
December 35.8 24.0 69 -21 1.2
Entire year 62.8 40.9 116 -24 7.5
More Ephrata Weather Records
1903–2024
Highest daily low 85 °F July 11, 1975
Lowest daily high -8 °F December 29, 1968
Greatest daily range
(Difference of high and low)
57 °F June 9, 1912
Greatest difference in daily high
over two conscutive days
36 °F Dec 15–16, 1964
Most daily precipitation 1.8 inches May 20, 1912
Most monthly precipitation 3.8 inches December 1931
Most yearly precipitation 13.6 inches 1948
Most yearly days with precipitation 114 1983
Earliest freeze September 12 1921
Earliest day ≥ 80 °F April 7 1977
Earliest day ≥ 90 °F April 20 1934
Earliest day ≥ 100 °F May 26 1947
Latest freeze June 7 1911
Latest day ≥ 80 °F October 22 1939
Latest day ≥ 90 °F October 2 1935
Latest day ≥ 100 °F September 4 1988
Most days in a year < 0 °F 22 1950
Most days in a year < 32 °F 148 1955
Most days in a year ≥ 80 °F 122 1938
Most days in a year ≥ 90 °F 69 1938
Most days in a year ≥ 100 °F 21 1942
Most days in a year ≥ 110 °F 4 1928
Ephrata Weather Streaks
Most consecutive days...
With precipitation 13 days Dec 18–30, 1964
Without precipitation 122 days Apr 1 – Jul 31, 1910
High temperature at or
below freezing
31 days Dec 14, 1987 – Jan 13, 1988
High temperature ≥ 80 °F 71 days Jul 5 – Sep 13, 2022
High temperature ≥ 90 °F 31 days Jul 14 – Aug 13, 1971
High temperature ≥ 100 °F 11 days Aug 10–20, 1967
High temperature ≥ 110 °F 4 days Jul 24–27, 1928
Plant Hardiness Zone
7A
Ephrata is in plant hardiness zone 7A
based on average yearly minimum temperature from 1991–2020
Ephrata Weather by Year
More Ephrata Weather
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Weather Station Details
Years Station Coordinates
1949–2024 Ephrata Municipal Airport location
1903–1948 Ephrata location