All-time weather records — Kennewick, WA
Climate change signal in Kennewick
of Kennewick's all-time daily heat records were set in the last decade (28 of 366 records since 2015).
of all-time daily cold records were set in the last decade (3 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 | # |
|---|---|---|---|---|
| 1890s | 40 | 31 | ||
| 1900s | 34 | 37 | ||
| 1910s | 58 | 73 | ||
| 1920s | 17 | 70 | ||
| 1930s | 43 | 39 | ||
| 1940s | 31 | 21 | ||
| 1950s | 6 | 35 | ||
| 1960s | 22 | 12 | ||
| 1970s | 21 | 13 | ||
| 1980s | 27 | 19 | ||
| 1990s | 18 | 9 | ||
| 2000s | 17 | 3 | ||
| 2010s | 11 | 4 | ||
| 2020s | 21 | · |
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 1894, the latest in 2026. Period of observation: 1894-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 73.9°F — Jan 10, 1896 | -27.0°F — Jan 21, 1930 | 0.92 in — Jan 2, 2009 |
| February | 73.9°F — Feb 21, 1995 | -23.1°F — Feb 3, 1950 | 1.56 in — Feb 3, 1916 |
| March | 89.1°F — Mar 27, 1910 | 8.1°F — Mar 4, 2019 | 0.90 in — Mar 12, 1923 |
| April | 95.0°F — Apr 18, 1910 | 18.0°F — Apr 1, 1936 | 1.09 in — Apr 24, 1936 |
| May | 104.0°F — May 30, 1983 | 26.1°F — May 1, 1905 | 3.03 in — May 17, 2019 |
| June | 114.1°F — Jun 30, 2021 | 35.1°F — Jun 4, 1984 | 1.42 in — Jun 26, 1942 |
| July | 115.0°F — Jul 27, 1939 | 37.9°F — Jul 2, 1921 | 0.88 in — Jul 5, 1948 |
| August | 115.0°F — Aug 10, 1898 | 37.0°F — Aug 31, 1924 | 1.11 in — Aug 30, 1977 |
| September | 100.0°F — Sep 1, 1911 | 21.0°F — Sep 24, 1926 | 0.91 in — Sep 4, 1911 |
| October | 89.1°F — Oct 2, 1943 | 14.0°F — Oct 30, 1935 | 1.21 in — Oct 29, 1982 |
| November | 79.0°F — Nov 14, 1999 | -8.0°F — Nov 23, 1985 | 2.00 in — Nov 20, 1921 |
| December | 72.0°F — Dec 2, 2021 | -29.0°F — Dec 13, 1919 | 1.13 in — Dec 31, 1913 |
Click a month to see every daily record for that month in Kennewick.