Tri-Cities, WA: records

4 October 2026: The hottest day on record in Tri-Cities, WA: 115°F on Sunday 27 June 2021, Thursday 27 July 1939 and Wednesday 10 August 1898.

The record begins: 1894

All-time records

Hottest day: 115°F; 27 June 2021, 27 July 1939, 10 August 1898
Coldest night: -29°F; 13 December 1919
Wettest day: 2.00 in; 20 November 1921
Warmest night: 82°F; 14 July 1906, 5 July 1906
Coldest day: -2°F; 14 December 1919, 13 December 1919, 12 January 1909

Daily records by decade

New daily records set in Tri-Cities, WA by decade since the 1920s: the most record highs, 73, came in the 1930s; the most record lows, 63, in the 1930s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1890s	0	0	6
1900s	0	0	10
1910s	0	0	10
1920s	7	21	10
1930s	73	63	10
1940s	45	33	10
1950s	18	37	10
1960s	33	17	10
1970s	29	16	10
1980s	31	19	10
1990s	21	24	10
2000s	27	43	10
2010s	28	34	10
2020s	32	9	7

Records by month

Month	Highest	Lowest	Wettest day
January	74°F 10 January 1896	-27°F 21 January 1930	0.90 in 1 January 1928
February	74°F 21 February 1995, 25 February 1986	-23°F 3 February 1950	1.56 in 3 February 1916
March	87°F 30 March 1911	-1°F 5 March 2019, 4 March 2019	0.90 in 12 March 1923
April	95°F 29 April 1926, 25 April 1910, 18 April 1910	18°F 1 April 1936, 2 April 1935	1.09 in 24 April 1936
May	104°F 30 May 1983, 31 May 1910	26°F 1 May 1905	1.18 in 16 May 1994
June	115°F 27 June 2021	35°F 4 June 1984	1.42 in 26 June 1942
July	115°F 27 July 1939	38°F 2 July 1921	0.88 in 5 July 1948
August	115°F 10 August 1898	37°F 31 August 1924	1.11 in 30 August 1977
September	102°F 1 September 2022	21°F 24 September 1926	0.91 in 4 September 1911
October	90°F 6 October 2020	9°F 31 October 2002	1.21 in 29 October 1982
November	78°F 18 November 1897	-8°F 23 November 1985	2.00 in 20 November 1921
December	71°F 1 December 2021, 18 December 1917, 26 December 1898	-29°F 13 December 1919	1.13 in 31 December 1913

Streaks, months and years

Longest heat streak	37 days	19 July to 24 August 1942	A high of 90°F or above
Longest cold streak	25 days	7 January to 31 January 1930	A high of 32°F or below
Wettest month	3.87 in	January 1969
Driest month	0.00 in	July 2018	and 31 more
Wettest year	13.66 in	1996
Driest year	3.78 in	1967

Every record in words

The coldest night on record in Tri-Cities, WA: a low of -29°F on Saturday 13 December 1919.
The wettest day on record in Tri-Cities, WA: 2.00 in on Sunday 20 November 1921.
The warmest night on record in Tri-Cities, WA: a low of 82°F on Saturday 14 July 1906 and Thursday 5 July 1906.
The coldest day on record in Tri-Cities, WA: a high of -2°F on Sunday 14 December 1919, Saturday 13 December 1919 and Tuesday 12 January 1909.
The longest run of days with a high of 90°F or above in Tri-Cities, WA: 37 days, from Sunday 19 July to Monday 24 August 1942.
The longest run of days with a high of 32°F or below in Tri-Cities, WA: 25 days, from Tuesday 7 January to Friday 31 January 1930.
The wettest month on record in Tri-Cities, WA: January 1969, with 3.87 in of precipitation.
The driest month on record in Tri-Cities, WA: July 2018, with 0.00 in of precipitation (shared with 31 other months).
The wettest year on record in Tri-Cities, WA: 1996, with 13.66 in of precipitation.
The driest year on record in Tri-Cities, WA: 1967, with 3.78 in of precipitation.

Tri-Cities, WA the day's answers