Tri-Cities, WA: Fall

9 October 2026: Fall 2026 so far averaged 62.8°F in Tri-Cities, WA, the warmest 1 September to 9 October since 2025, tied 56th warmest of 120 (with 1965 and 1931).

Fall 2026 so far, to 9 October 2026

Mean temperature: 62.8°F; Warmest since 2025; 56th warmest of 120
Precipitation: 0.33 in; Driest since 2025; 54th driest of 115

A normal 1 September to 9 October in Tri-Cities, WA (1991 to 2020): a mean temperature of 62.8°F, between 60.6°F and 65.6°F in eight years of ten and 0.25 in of precipitation, between 0.02 in and 0.98 in in eight years of ten.

The mean temperature of every 1 September to 9 October in Tri-Cities, WA since 1894: 62.8°F in 2026; the highest is 68°F, in 1938.

Normal range, 60.6 to 65.6°F

Every year, ranked, as a table

Every 1 September to 9 October 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	62.8	56	78.5	48	47.2	77	0.33	60	0
2025	66.4	9	82.2	8	50.6	13	0.25	70	0
2024	65.7	13	82.3	7	49.1	38	0.13	84	0
2023	65	23	79.6	37	50.3	20	0.34	57	0
2022	66.9	6	83.6	3	50.5	14	0.12	86	2
2021	63.6	41	79.5	39	47.6	66	0.41	50	0
2020	66.5	8	83.2	4	49.9	25	0.05	97	0
2019	63	53	76.6	82	49.4	35	0.55	38	0
2018	60.6	106	75.9	92	45.4	101	0.70	26	0
2017	62.9	55	78.3	51	47.4	69	0.13	84	0
2016	62	74	76.9	74	47.2	77	0.85	20	0
2015	62.3	68	78.3	51	46.3	90	0.19	77	0
2014	64.4	28	81.4	15	47.3	72	0.05	97	0
2013	63.2	49	76.9	74	49.5	30	1.02	12	0
2012	61.6	82	80.4	26	42.8	118	trace	108	0
2011	64.4	28	80.9	19	47.9	59	0.25	70	0
2010	63.6	41	77.3	66	49.8	27	1.34	8	0
2009	62.2	72	79	44	45.4	101	0.47	44	0
2008	61.2	94	78.1	57	44.3	113	0.22	75	0
2007	61.2	94	76.6	82	45.8	96	0.57	36	0
2006	61.3	92	78.2	55	44.3	113	0.43	49	0
2005	60.3	108	75.9	92	44.7	109	0.97	15	0
2004	62.4	65	78.5	48	46.3	90	0.38	51	0
2003	65.3	20	82.2	8	48.3	51	0.25	70	0
2002	61.2	94	78.2	55	44.2	116	0.07	92	0
2001	62.7	59	80.9	19	44.5	111	0.03	101	0
2000	59.8	112	75.3	100	44.3	113	1.46	5	0
1999	59.7	113	78.6	47	40.7	120	0.01	105	0
1998	64.6	26	81.9	12	47.3	72	0.25	70	0
1997	65.4	19	77.4	64	53.6	1	0.72	25	1
1996	63.2	49	77	73	49.5	30	0.23	74	0
1995	66.3	10	79.5	39	53.2	4	0.65	31	0
1994	66.3	10	81	17	51.7	8	0.07	92	0
1993	64.6	26	80.3	29	49	41	0.02	103	0
1992	62.3	68	75.6	96	49.1	38	0.38	51	0
1991	65.5	15	81.7	14	49.5	30	trace	108	1
1990	67.2	3	82.1	10	52.3	6	trace	108	0
1989	64.1	34	79.1	41	49.2	37	trace	108	0
1988	65.3	20	79.9	33	50.5	14	0.38	51	1
1987	66.7	7	82.9	5	50.9	12	0.00	115	1
1986	62.6	62	74.2	112	50.5	14	0.63	32	2
1985	58.5	118	72.3	117	44.6	110	0.86	19	1
1984	61.9	78	76	91	47.7	64	0.52	42	1
1983			76.3	88			0.29	66	12
1982			76.6	82			1.16	9	12
1981	62.5	64	79.1	41	45.6	99	0.57	36	1
1980	65.5	15	80.8	21	50.2	22	1.63	3	0
1979									9
1978	61.2	94	74.6	104	47.9	59			2
1977	59.3	115	71.3	121	47.2	77	0.62	33	0
1976			80.6	25			0.02	103	11
1975	63.3	46	80.2	30	46.3	90	0.05	97	0
1974	62.4	65	80.7	23	44.1	117	trace	108	0
1973	61.7	80	77.1	70	46.4	89	0.67	29	0
1972	61.1	99	76.8	77	45.4	101	0.18	78	0
1971	60.9	102	74.5	108	47.2	77	0.85	20	0
1970	59	116	73	115	45.1	107	0.28	68	0
1969	62.7	59	74.9	101	50.5	14	0.55	38	0
1968	63.1	52	75.5	98	50.5	14	0.47	44	1
1967	67.2	3	81.9	12	52.6	5	0.29	66	0
1966	65.5	15	79.6	37	51.4	9	0.18	78	0
1965	62.8	56	76.7	80	48.8	43	0.06	96	0
1964	61.4	87	74.7	103	48.1	56	0.08	90	0
1963	67	5	80.4	26	53.5	2	0.32	63	0
1962	63.6	41	77.3	66	49.9	25	0.34	57	0
1961	61.4	87	74.4	110	48.3	51	0.32	63	0
1960	62.7	59	77.2	68	48.1	56	0.58	35	0
1959	60.1	110	71.4	120	48.7	46	1.51	4	0
1958	63.5	44	76.6	82	50.3	20	0.07	92	0
1957	62	74	76.1	90	48	58	2.59	1	0
1956	61.4	87	77.6	61	45.2	106	0.01	105	1
1955	61	101	74.8	102	47.2	77	0.67	29	1
1954	60.9	102	74.6	104	47.3	72	0.37	54	0
1953	64.1	34	79.9	33	48.3	51	0.08	90	1
1952	64.1	34	80.7	23	47.5	68	0.35	56	1
1951	64.2	32	78.3	51	50.1	23	0.70	26	0
1950	61.5	84	77.2	68	45.4	101	1.05	11	1
1949	62	74	75.6	96	48.8	43	0.32	63	1
1948	60.6	106	74	113	47.3	72	0.54	40	0
1947	64.3	30	76.7	80	51.8	7	1.35	7	0
1946	60.1	110	71.9	118	48.3	51	0.91	17	0
1945	61.6	82	77.9	58	45.3	105	0.34	57	0
1944	64.8	24	81.2	16	48.5	48	0.07	92	0
1943	67.3	2	86.7	1	47.8	63	trace	108	0
1942	66.1	12	83.9	2	48.2	55	0.45	47	0
1941	60.2	109	72.8	116	47.9	59	1.00	13	1
1940	65.5	15	80.1	32	51.1	10	0.91	17	1
1939	63.8	38	80.4	26	47.3	72			0
1938	68	1	82.6	6	53.4	3			0
1937	62	74	75.4	99	48.6	47			0
1936	61.3	92	76.8	77	45.7	97			0
1935	64.3	30	79.1	41	49.5	30			0
1934	63.3	46	77.7	60	48.8	43	0.49	43	0
1933	61.2	94	75.9	92	46.5	88			0
1932	62.3	68	77.5	62	47	82			0
1931	62.8	56	75.9	92	49.8	27	0.21	76	0
1930	63.8	38	77.1	70	50.5	14	0.82	23	0
1929	61.1	99	74.6	104	47.6	66			0
1928	62.4	65	76.6	82	48.4	50	0.47	44	1
1927	59.7	113	70.7	123	48.5	48	2.45	2	1
1926	57.9	120	71.2	122	44.4	112	0.97	15	2
1925	60.7	105	74.6	104	46.8	85	1.07	10	0
1924	62.1	73	76.8	77	47.4	69	0.36	55	0
1923	64	37	78.9	46	49.1	38	1.39	6	0
1922	63.3	46	79	44	47.7	64	0.14	83	1
1921	58.2	119	74.3	111	42	119	0.17	81	1
1920	61.9	78	76.9	74	46.9	83	0.33	60	0
1919	61.7	80	77.8	59	45.7	97	0.33	60	0
1918	65.1	22	81	17	49.6	29	0.09	88	1
1917	64.8	24	80.2	30	49.5	30	0.26	69	2
1916	61.4	87	76.2	89	46.6	87	0.01	105	0
1915	61.5	84	76.4	87	46.7	86	0.12	86	0
1914	61.4	87	73.8	114	48.9	42	0.59	34	0
1913							1.00	13	8
1912	61.5	84	77.5	62	45.5	100	0.15	82	1
1911									14
1910	63.7	40	79.9	33	47.4	69	0.05	97	0
1909									30
1908	63.5	44	80.8	21	46.2	94	trace	108	1
1907	60.9	102	77.1	70	44.8	108	0.18	78	2
1906							0.03	101	8
1905	64.2	32	77.4	64	51	11	0.84	22	0
1904									11
1899	65.6	14	82	11	49.3	36	0.44	48	0
1898	63.2	49	78.5	48	47.9	59	0.09	88	0
1897	62.6	62	78.3	51	46.9	83	0.54	40	0
1896	63	53	79.7	36	46.3	90	0.70	26	0
1895	58.9	117	71.9	118	46	95	0.78	24	0
1894	62.3	68	74.5	108	50.1	23			0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1938	68
1943	67.3
1990	67.2
1967	67.2
1963	67
2022	66.9
1987	66.7
2020	66.5
2025	66.4
1995	66.3
More years share the last value

Coldest
Year	Mean, °F
1926	57.9
1921	58.2
1985	58.5
1895	58.9
1970	59
1977	59.3
1999	59.7
1927	59.7
2000	59.8
1959	60.1
More years share the last value

Wettest
Year	Precipitation, in
1957	2.59
1927	2.45
1980	1.63
1959	1.51
2000	1.46
1923	1.39
1947	1.35
2010	1.34
1982	1.16
1925	1.07

Driest
Year	Precipitation, in
1987	0.00
2012	trace
1991	trace
1990	trace
1989	trace
1974	trace
1943	trace
1908	trace
1999	0.01
1956	0.01
More years share the last value

The hottest, coldest and wettest days

Hottest day: 90°F; 10 September 2026
Coldest night: 33°F; 28 September 2026
Wettest day: 0.19 in; 12 September 2026

Every month, season and year

Months

Seasons

Years

Tri-Cities, WA the day's answers

All-time records

Every answer in words

Fall 2026 so far brought 0.33 in of precipitation in Tri-Cities, WA, the driest 1 September to 9 October since 2025, tied 54th driest of 115 (with 1920 and 1919).
The hottest day of fall 2026 so far in Tri-Cities, WA: 90°F on Thursday 10 September 2026.
The coldest night of fall 2026 so far in Tri-Cities, WA: a low of 33°F on Monday 28 September 2026.
The wettest day of fall 2026 so far in Tri-Cities, WA: 0.19 in on Saturday 12 September 2026.