Earliest and Latest Days of 100° F in Ephrata

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Ephrata, Washington history. It is based on NOAA data from the years 1903–2024.

Also see:

Earliest 100 degree day in Ephrata?

The earliest in the year that Ephrata, Washington had a high temperature of at least 100 °F is May 26 which has happened twice, most recently in 1947.

Latest 100 degree day in Ephrata?

The latest in the year that Ephrata, Washington had a high temperature of at least 100 °F is September 4 which happened in 1988.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 26	1947	100 °F
May 26	1936	101 °F
May 28	1934	101 °F
May 30	1986	100 °F
May 31	1986	101 °F
June 1	1986	100 °F
June 2	1937	100 °F
June 3	2007	100 °F
June 3	1970	101 °F
June 4	1969	100 °F
June 5	2016	101 °F
June 6	2016	101 °F
June 6	1926	100 °F
June 7	1931	101 °F
June 8	2015	102 °F
June 10	1934	100 °F
June 11	1940	100 °F
June 11	1934	100 °F
June 11	1903	104 °F
June 12	1940	101 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 4	1988	102 °F
September 3	1988	106 °F
September 2	1998	100 °F
September 2	1988	101 °F
September 2	1950	101 °F
September 2	1938	102 °F
September 1	1987	100 °F
September 1	1938	100 °F
August 31	2022	101 °F
August 31	1998	100 °F
August 31	1967	101 °F
August 31	1938	100 °F
August 30	1967	102 °F
August 29	2017	100 °F
August 29	1972	100 °F
August 28	2023	102 °F
August 28	1972	103 °F
August 28	1934	101 °F
August 27	1972	101 °F
August 26	1938	100 °F
August 26	1934	100 °F