All-time weather records — West Richland, WA

Record high
113.0°F
July 30, 2020
Record low
-36.9°F
December 9, 1996
Wettest day
2.00 in
February 4, 2019

Climate change signal in West Richland

11.2%

of West Richland's all-time daily heat records were set in the last decade (41 of 366 records since 2015).

4.4%

of all-time daily cold records were set in the last decade (16 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
83
52
1950s
81
61
1960s
51
53
1970s
53
64
1980s
28
48
1990s
10
33
2000s
15
28
2010s
11
22
2020s
34
5

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 1944, the latest in 2025. Period of observation: 1944-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 31, 1971 -20.9°F — Jan 29, 1950 0.95 in — Jan 7, 1948
February 73.0°F — Feb 1, 1971 -22.0°F — Feb 2, 1950 2.00 in — Feb 4, 2019
March 82.0°F — Mar 26, 1960 7.0°F — Mar 5, 2019 0.63 in — Mar 17, 1954
April 91.9°F — Apr 25, 1977 23.0°F — Apr 3, 1972 0.72 in — Apr 6, 1969
May 105.1°F — May 26, 1947 30.0°F — May 1, 1954 0.96 in — May 13, 2015
June 111.9°F — Jun 29, 2021 37.9°F — Jun 5, 1984 0.90 in — Jun 11, 1948
July 113.0°F — Jul 30, 2020 41.0°F — Jul 25, 1948 0.91 in — Jul 31, 1998
August 113.0°F — Aug 5, 1961 39.0°F — Aug 19, 1973 1.12 in — Aug 30, 1977
September 106.0°F — Sep 3, 1950 30.9°F — Sep 25, 1972 0.70 in — Sep 2, 1971
October 93.0°F — Oct 6, 2020 12.9°F — Oct 31, 2002 1.10 in — Oct 29, 1982
November 78.1°F — Nov 4, 2020 -6.0°F — Nov 23, 1985 0.78 in — Nov 20, 1966
December 69.1°F — Dec 1, 2021 -36.9°F — Dec 9, 1996 0.72 in — Dec 13, 2003

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