All-time weather records — Ephrata, WA

Record high
116.1°F
June 29, 2021
Record low
-24.0°F
February 1, 1950
Wettest day
1.74 in
July 31, 1998

Climate change signal in Ephrata

18.6%

of Ephrata's all-time daily heat records were set in the last decade (68 of 366 records since 2015).

7.9%

of all-time daily cold records were set in the last decade (29 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1940s
4
15
1950s
36
56
1960s
51
47
1970s
49
48
1980s
48
77
1990s
50
37
2000s
32
40
2010s
50
33
2020s
46
13

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1949, the latest in 2026. Period of observation: 1949-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 61.0°F — Jan 31, 1953 -22.0°F — Jan 29, 1950 0.69 in — Jan 11, 1959
February 64.9°F — Feb 8, 2018 -24.0°F — Feb 1, 1950 0.90 in — Feb 18, 1989
March 75.0°F — Mar 19, 2026 1.9°F — Mar 4, 1955 0.85 in — Mar 24, 1991
April 93.9°F — Apr 24, 1977 19.2°F — Apr 15, 2022 0.93 in — Apr 10, 2023
May 100.9°F — May 31, 1986 28.0°F — May 8, 2002 1.11 in — May 18, 2020
June 116.1°F — Jun 29, 2021 33.1°F — Jun 28, 1976 0.97 in — Jun 4, 1951
July 109.0°F — Jul 18, 1960 39.9°F — Jul 8, 1981 1.74 in — Jul 31, 1998
August 115.0°F — Aug 4, 1961 36.0°F — Aug 22, 1960 0.93 in — Aug 21, 1990
September 106.0°F — Sep 3, 1988 28.0°F — Sep 23, 2000 0.67 in — Sep 4, 1960
October 88.0°F — Oct 6, 2014 8.1°F — Oct 31, 2002 0.92 in — Oct 17, 2004
November 72.0°F — Nov 9, 1989 -15.0°F — Nov 23, 1985 0.82 in — Nov 5, 1998
December 69.1°F — Dec 1, 2021 -20.9°F — Dec 23, 1983 0.76 in — Dec 28, 1992

Click a month to see every daily record for that month in Ephrata.