Tri-Cities, WA: Summer

31 August 2026: Summer 2026 averaged 72.9°F in Tri-Cities, WA, the warmest summer since 2025, tied 43rd warmest of 117 (with 1985, 1973 and 1965).

Summer 2026

Mean temperature: 72.9°F; Warmest since 2025; 43rd warmest of 117
Precipitation: 0.25 in; Driest since 2025; 17th driest of 112

A normal summer in Tri-Cities, WA (1991 to 2020): a mean temperature of 72.5°F, between 70.6°F and 73.8°F in eight years of ten and 0.88 in of precipitation, between 0.32 in and 1.76 in in eight years of ten.

The mean temperature of every summer in Tri-Cities, WA since 1894: 72.9°F in 2026; the highest is 77.5°F, in 1961.

Normal range, 70.6 to 73.8°F

Every year, ranked, as a table

Every summer in Tri-Cities, WA from 1894 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	72.9	43	90	31	55.8	77	0.25	96	0
2025	74.3	13	90.8	19	57.8	27	0.07	107	0
2024	73.5	28	91.3	11	55.8	77	0.67	61	0
2023	74.7	9	91.7	9	57.6	35	0.35	91	0
2022	75.9	3	93	4	58.8	11	1.26	31	1
2021	76.8	2	93.7	1	59.8	8	0.20	100	0
2020	73.5	28	90.6	22	56.3	64	0.76	57	0
2019	73.5	28	89.7	35	57.3	38	0.37	89	0
2018	72.3	58	90.2	26	54.5	104	0.11	104	0
2017	73.4	33	91.6	10	55.3	91	0.55	69	0
2016	72.2	63	88.8	53	55.6	83	0.83	56	0
2015	75.5	5	93.2	3	57.9	22	0.03	109	0
2014	74.2	15	90.7	21	57.7	31	0.68	60	0
2013	73.4	33	89.9	33	57	47	1.44	25	0
2012	71.7	77	88	64	55.5	86	2.57	3	0
2011	70.1	114	86.5	96	53.8	110	1.43	26	0
2010	70.8	101	87.1	86	54.5	104	1.62	18	0
2009	73.1	38	90.1	28	56.2	66	0.42	80	2
2008	70.9	99	88.1	62	53.7	112	1.23	34	0
2007	72.2	63	89.2	43	55.2	94	0.85	55	3
2006	72.8	47	90.1	28	55.6	83	1.27	30	0
2005	72.1	68	89.3	39	54.9	97	0.94	46	0
2004	73.8	22	90.1	28	57.5	37	1.88	8	0
2003	73.1	38	91.2	12	55	95	0.06	108	1
2002	71.6	78	88.9	49	54.2	108	1.71	15	0
2001	70.6	105	87.3	80	53.8	110	0.88	53	3
2000	71	95	88.5	57	53.5	113	0.67	61	1
1999	70.5	107	86.8	94	54.3	107	0.42	80	0
1998	73.8	22	91	15	56.5	59	0.94	46	0
1997	73.6	27	87.2	84	60.2	6	0.89	51	1
1996	72.7	49	87.7	72	57.7	31			0
1995	71	95	84.3	119	57.8	27	1.70	17	1
1994	73.7	26	88.1	62	59.5	9	0.70	58	3
1993	69.4	117	81.8	120	57.1	44	1.73	14	2
1992	74.2	15	87.9	67	60.4	5	2.65	2	0
1991	72.3	58	85.9	105	58.8	11	0.56	67	1
1990	74	17	87.3	80	60.8	2	0.65	65	1
1989	72.5	55	85.9	105	59.2	10	0.43	79	0
1988	72.2	63	86.1	101	58.3	17	0.53	73	0
1987	72.4	56	86.3	99	58.4	16	0.30	94	0
1986	74	17	89.2	43	58.8	11	0.22	97	1
1985	72.9	43	89.1	45	56.4	62	0.51	74	2
1984	72	72	87.9	67	56.4	62	0.48	76	2
1983			85.9	105			0.92	49	14
1982			88.4	59			0.96	43	11
1981	71.4	83	86.9	93	55.7	79	0.93	48	2
1980	70.8	101	85.6	112	55.9	72	1.25	33	0
1979									30
1978									33
1977	74.3	13	90.6	22	57.9	22	2.09	6	8
1976	69.5	116	85.8	108	53.5	113	1.59	21	3
1975	71.8	75	87.3	80	56.2	66	1.61	19	2
1974	73	40	90.3	25	55.5	86	0.38	88	2
1973	72.9	43	89.3	39	56.6	55	0.13	103	0
1972	73.5	28	89.7	35	57.3	38	1.40	27	0
1971	73	40	88.7	56	57.3	38	1.79	11	0
1970	73.8	22	89.6	37	57.9	22	0.39	87	0
1969	72.1	68	87.5	77	56.7	53	0.41	84	0
1968	72.7	49	86.7	95	58.8	11	1.54	22	2
1967	75.4	6	92.2	7	58.6	15	0.56	67	0
1966	71.4	83	86.4	97	56.3	64	1.35	28	1
1965	72.9	43	87.4	79	58.3	17	1.26	31	0
1964	70.3	110	85	115	55.7	79	0.92	49	0
1963	72	72	86	102	58	19	0.40	85	0
1962	71.3	86	87.1	86	55.5	86	0.54	72	2
1961	77.5	1	93.6	2	61.4	1	0.55	69	0
1960	73.2	37	88.5	57	57.8	27	0.70	58	0
1959	71.3	86	86	102	56.6	55	0.42	80	0
1958					60.7	3	0.42	80	10
1957	70.5	107	85.4	114	55.7	79	0.67	61	4
1956							0.67	61	14
1955							1.76	12	18
1954							1.11	38	14
1953							0.51	74	11
1952	71.8	75	87.7	72	55.9	72	0.96	43	0
1951	72.4	56	88.2	61	56.5	59	1.80	10	0
1950	71.6	78	87.3	80	55.9	72	1.09	42	2
1949	71	95	87.1	86	54.9	97	0.01	112	0
1948	71.4	83	85.5	113	57.3	38	3.72	1	4
1947	70.9	99	85	115	56.8	51	1.52	24	1
1946	71.2	90	86.4	97	56.1	69	0.44	78	0
1945	71.9	74	89.1	45	54.8	100	0.89	51	5
1944	72.2	63	88.9	49	55.3	91	0.61	66	1
1943	71.2	90	87.6	74	54.7	101	1.10	41	2
1942	73.4	33	90.2	26	56.7	53	1.71	15	1
1941	73.3	36	88.8	53	57.8	27	2.43	4	0
1940	73.9	20	91.9	8	55.9	72			1
1939	73.5	28	90.9	17	56	70			0
1938	74.4	11	90.8	19	58	19			1
1937	70.2	111	84.6	117	56	70	1.34	29	1
1936	71.2	90	84.4	118	57.9	22			1
1935	70.5	107	86	102	55	95	0.19	102	0
1934	74.7	9	91	15	57.9	22			4
1933	72.6	53	88	64	57.1	44	0.20	100	5
1932	71.2	90	85.7	110	56.6	55	0.22	97	1
1931	72.8	47	87.9	67	57.7	31	0.96	43	0
1930	72.1	68	87.2	84	57	47	0.08	106	0
1929	72.1	68	87.1	86	56.8	51			2
1928	72.3	58	87	91	57.3	38			3
1927	72.2	63	87	91	57.3	38			2
1926	72.7	49	88.8	53	56.5	59	1.11	38	2
1925	73	40	88.9	49	57.1	44	0.40	85	0
1924	71.6	78	87.6	74	55.6	83	1.12	37	1
1923	72.3	58	87.5	77	56.9	50	1.75	13	4
1922	73.9	20	89.9	33	58	19	0.46	77	1
1921	71.2	90	87.8	70	54.6	103	0.27	95	0
1920	70.2	111	87.6	74	53	115	2.18	5	1
1919	70.2	111	88	64	52.2	116	0.03	109	8
1918	72.3	58	89	47	55.5	86	1.11	38	4
1917	71.5	81	89.3	39	53.9	109	0.37	89	4
1916	70.1	114	85.7	110	54.5	104	2.02	7	0
1915	71.3	86	87.8	70	54.9	97	1.21	35	0
1914	71.3	86	87.1	86	55.3	91	0.87	54	1
1913	73.8	22	90.9	17	56.6	55	1.54	22	7
1912	72.7	49	90	31	55.7	79	1.87	9	9
1911	75.1	8	92.9	5	57	47			2
1910	70.8	101	89.6	37	51.9	118	0.32	93	5
1909	70.7	104	89.3	39	52.1	117	0.21	99	0
1908									12
1907	70.6	105	85.8	108	55.4	90			0
1906	75.8	4	91.1	13	60.5	4	0.02	111	7
1905									30
1904			91.1	13			0.55	69	30
1899	71.5	81	88.3	60	54.7	101	1.60	20	0
1898	75.2	7	92.8	6	57.6	35			0
1897	72.6	53	89	47	56.2	66	1.20	36	0
1896	74	17	90.4	24	57.7	31	0.10	105	0
1895	71	95	86.3	99	55.9	72			5
1894	74.4	11	88.9	49	59.9	7	0.34	92	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1961	77.5
2021	76.8
2022	75.9
1906	75.8
2015	75.5
1967	75.4
1898	75.2
1911	75.1
2023	74.7
1934	74.7

Coldest
Year	Mean, °F
1993	69.4
1976	69.5
2011	70.1
1916	70.1
1937	70.2
1920	70.2
1919	70.2
1964	70.3
1999	70.5
1957	70.5
More years share the last value

Wettest
Year	Precipitation, in
1948	3.72
1992	2.65
2012	2.57
1941	2.43
1920	2.18
1977	2.09
1916	2.02
2004	1.88
1912	1.87
1951	1.80

Driest
Year	Precipitation, in
1949	0.01
1906	0.02
2015	0.03
1919	0.03
2003	0.06
2025	0.07
1930	0.08
1896	0.10
2018	0.11
1973	0.13

The hottest, coldest and wettest days

Hottest day: 102°F; 7 August 2026
Coldest night: 41°F; 11 June 2026
Wettest day: 0.08 in; 22 August 2026

Every month, season and year

Months

Seasons

Years

Tri-Cities, WA the day's answers

All-time records

Every answer in words

Summer 2026 brought 0.25 in of precipitation in Tri-Cities, WA, the driest summer since 2025, 17th driest of 112.
The hottest day of summer 2026 in Tri-Cities, WA: 102°F on Friday 7 August 2026.
The coldest night of summer 2026 in Tri-Cities, WA: a low of 41°F on Thursday 11 June 2026.
The wettest day of summer 2026 in Tri-Cities, WA: 0.08 in on Saturday 22 August 2026.