Missoula, MT: September

30 September 2026: September 2026 averaged 57.1°F in Missoula, MT, the warmest September since 2025, tied 55th warmest of 127 (with 1974).

September 2026

Mean temperature: 57.1°F; Warmest since 2025; 55th warmest of 127
Precipitation: 2.13 in; Wettest since 2019; 20th wettest of 127

A normal September in Missoula, MT (1991 to 2020): a mean temperature of 57.9°F, between 54.2°F and 61.4°F in eight years of ten and 0.72 in of precipitation, between 0.27 in and 2.00 in in eight years of ten.

The mean temperature of every September in Missoula, MT since 1893: 57.1°F in 2026; the highest is 66.3°F, in 1938.

Normal range, 54.2 to 61.4°F

Every year, ranked, as a table

Every September in Missoula, MT from 1893 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	57.1	55	70.9	75	43.2	29	2.13	20	0
2025	64.2	2	81.2	3	47.1	5	0.41	102	0
2024	61.9	10	77.4	18	46.4	7	1.05	62	0
2023	60.1	21	74.2	42	46.1	9	1.68	29	0
2022	62.5	7	78.9	12	46	11	1.42	46	0
2021	58.8	34	76.2	25	41.4	71	0.57	89	0
2020	59.2	29	76.6	20	41.9	61	0.30	110	0
2019	58.1	43	70	85	46.1	9	2.40	14	0
2018	56.7	64	72	65	41.3	73	0.17	117	0
2017	56.9	61	70.8	77	42.9	36	1.17	56	0
2016	56.2	71	69.8	89	42.6	43	1.13	60	0
2015	57	57	72.8	57	41.1	77	0.52	93	0
2014	58.8	34	75.1	30	42.5	46	0.28	113	0
2013	61.2	15	73.5	49	48.9	3	1.42	46	0
2012	60.2	20	78.3	15	42	58	trace	126	0
2011	61.5	11	79.9	5	43.2	29	0.27	114	0
2010	57.8	45	71.6	68	44.1	17	1.56	38	0
2009	62.1	9	79.9	5	44.3	16	0.27	114	0
2008	56.2	71	71.3	72	41.1	77	1.09	61	0
2007	57.7	47	73.1	52	42.2	52	1.51	44	0
2006	58.2	41	73.9	47	42.4	48	1.63	33	0
2005	56.4	67	70.8	77	42.1	56	1.56	38	0
2004	54.2	101	65.1	117	43.3	26	1.96	23	0
2003	59.3	26	74.1	45	44.4	15	1.05	62	0
2002	57.3	52	73.2	51	41.5	69	0.54	92	0
2001	61.4	13	79.4	7	43.3	26	0.31	107	0
2000	54.1	102	67.8	104	40.3	86	2.51	12	0
1999	54.1	102	70.8	77	37.4	115	0.42	101	0
1998	61.5	11	77.6	16	45.5	13	1.17	56	0
1997	58.3	39	74.3	41	42.2	52	0.65	83	0
1996	54.1	102	68.2	100	40	91	0.70	77	0
1995	58	44	72.3	62	43.6	22	2.56	11	0
1994	60.5	17	79.2	8	41.8	62	0.31	107	0
1993	55.4	86	72.6	61	38.3	109	0.35	105	0
1992	54.7	95	70.1	83	39.2	98	0.73	75	0
1991	58.3	39	74.6	35	42	58	0.31	107	0
1990	62.6	6	81.8	2	43.4	24	0.06	122	0
1989	55.9	78	71.6	68	40.1	90	0.88	69	0
1988	56.3	70	72.7	59	40	91	0.51	94	0
1987	59.3	26	78.4	14	40.2	88	0.09	120	0
1986	53	109	62.5	125	43.5	23	3.54	3	0
1985	50.5	123	61	127	40	91	3.60	2	0
1984	52.8	111	66.9	110	38.6	104	0.79	71	0
1983	51.1	119	64.6	121	37.6	114	1.37	49	0
1982	56.2	71	70.6	81	41.7	66	2.09	22	0
1981	56.7	64	72.9	56	40.4	83	1.01	65	0
1980	57	57	71.1	73	42.8	38	0.77	73	0
1979	61.3	14	79	11	43.7	21	0.05	123	0
1978	55.1	88	67.9	103	42.3	50	1.78	26	0
1977	54.5	99	67.6	106	41.5	69	1.67	31	0
1976	57.3	52	75.1	30	39.6	96	0.58	88	0
1975	56	75	74.8	34	37.3	116	0.51	94	0
1974	57.1	55	74.9	33	39.3	97	0.70	77	0
1973	56.4	67	71.1	73	41.8	62	0.60	87	0
1972	51.4	116	66.3	113	36.5	121	1.66	32	0
1971	51.8	115	67.8	104	35.9	124	0.30	110	0
1970	50.6	122	65.8	114	35.4	127	0.48	99	0
1969	56.8	63	72.2	63	41.3	73	0.66	81	0
1968	54.7	95	67.3	109	42.1	56	1.92	24	0
1967	62.2	8	81.1	4	43.3	26	0.49	97	0
1966	62.8	5	78.7	13	47	6	0.96	66	0
1965	47.8	127	58.4	128	37.2	117	2.11	21	0
1964	51.1	119	66.4	112	35.7	126	0.51	94	0
1963	59.4	23	75.5	28	43.2	29	1.54	40	0
1962	54.8	93	71.4	71	38.2	111	0.90	68	0
1961	49.9	126	63.2	124	36.6	120	1.53	41	0
1960	56.4	67	74.4	39	38.4	105	0.37	104	0
1959	54	105	64.9	119	43	34	3.11	6	0
1958	55.6	84	70	85	41.2	76	1.15	59	0
1957	59.2	29	76.3	24	42	58	0.21	116	0
1956	57.4	50	74.5	37	40.3	86	0.49	97	0
1955	55.1	88	70.4	82	39.9	94	0.62	85	0
1954	54.8	93	69	93	40.6	82	2.22	16	0
1953	59.1	31	76	26	42.2	52	0.72	76	0
1952	59.4	23	76.5	21	42.2	52	0.69	80	0
1951	54.5	99	68.2	100	40.7	81	1.28	53	0
1950	55.8	81	70.8	77	40.9	79	0.61	86	0
1949	57.7	47	73	53	42.3	50	1.33	50	0
1948	54.9	91	71.8	67	38	112	0.13	119	0
1947	55.7	83	68.6	98	42.9	36	1.70	28	1
1946	54.7	95	69.1	92	40.2	88	0.70	77	2
1945	54.9	91	68.9	95	40.9	79	0.96	66	2
1944	59.3	26	73	53	45.7	12	1.20	55	2
1943	61.1	16	77	19	45.1	14	0.05	123	1
1942	60.3	19	74.2	42	46.3	8	1.51	44	0
1941	52.4	112	62.3	126	42.6	43	1.62	34	0
1940	63.1	3	75.6	27	50.6	1	1.68	29	1
1939	58.9	33	74.4	39	43.4	24	0.86	70	1
1938	66.3	1	81.9	1	50.6	1	0.66	81	0
1937	62.9	4	77.5	17	48.3	4	0.55	91	2
1936	57	57	70.9	75	43.1	33	1.22	54	2
1935	60.4	18	79.2	8	41.7	66	0.33	106	0
1934	53.8	107	68	102	38.4	105	0.78	72	2
1933	53.9	106	68.9	95	38.9	103	1.17	56	0
1932	56.7	64	74.1	45	39.2	98	0.15	118	1
1931	56.1	74	69.3	91	42.8	38	2.17	19	1
1930	57.8	45	71.6	68	44	19	2.84	8	0
1929	52.2	113	65.1	117	39.2	98	0.08	121	1
1928	58.2	41	74.6	35	41.8	62	0.29	112	0
1927	55.1	88	68.5	99	41.8	62	2.20	18	0
1926	50.4	124	63.6	123	36.4	123	1.91	25	2
1925	57	57	70	85	44.1	17	3.12	5	0
1924	56	75	73	53	39	101	0.56	90	0
1923	59.4	23	76.4	23	42.5	46	0.39	103	0
1919	57.4	50	72.1	64	42.8	38	0.63	84	2
1918	58.8	34	75.1	30	42.4	48	1.60	35	0
1917	55.5	85	72.7	59	38.4	105	2.80	9	1
1916	55.9	78	72	65	39.8	95	1.52	42	0
1915	53.4	108	65.5	115	41.3	73	2.96	7	0
1914	51.1	119	65.2	116	36.7	118	1.52	42	1
1913	57.3	52	74.2	42	40.4	83	0.74	74	0
1912	50.2	125	63.9	122	36.5	121	1.58	37	0
1911	54.6	98	70.1	83	39	101	1.31	52	0
1910	55.8	81	68.8	97	43.2	29	2.76	10	1
1909	56.9	61	70	85	43.8	20	2.38	15	0
1908	58.6	38	74.5	37	42.8	38	3.74	1	0
1907			73.9	47					26
1906	59.1	31	76.5	21	41.7	66	0.00	127	3
1905									6
1904	59.8	22	79.2	8	40.4	83	0.03	125	0
1903									6
1902	55.9	78	73.3	50	38.4	105	0.46	100	0
1901									9
1900	56	75	69	93	43	34	2.21	17	1
1899	58.8	34	75.4	29	42.6	43	1.60	35	2
1898	57.7	47	72.8	57	42.7	42	1.40	48	1
1897	55.4	86	69.4	90	41.4	71	3.42	4	0
1896	52.1	114	67.6	106	36.7	118	1.74	27	0
1895	51.2	118	66.5	111	35.8	125	1.04	64	0
1894	51.3	117	64.7	120	37.8	113	1.32	51	0
1893	52.9	110	67.5	108	38.3	109	2.50	13	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1938	66.3
2025	64.2
1940	63.1
1937	62.9
1966	62.8
1990	62.6
2022	62.5
1967	62.2
2009	62.1
2024	61.9

Coldest
Year	Mean, °F
1965	47.8
1961	49.9
1912	50.2
1926	50.4
1985	50.5
1970	50.6
1983	51.1
1964	51.1
1914	51.1
1895	51.2

Wettest
Year	Precipitation, in
1908	3.74
1985	3.60
1986	3.54
1897	3.42
1925	3.12
1959	3.11
1915	2.96
1930	2.84
1917	2.80
1910	2.76

Driest
Year	Precipitation, in
1906	0.00
2012	trace
1904	0.03
1979	0.05
1943	0.05
1990	0.06
1929	0.08
1987	0.09
1948	0.13
1932	0.15

The hottest, coldest and wettest days

Hottest day: 88°F; 1 September 2026
Coldest night: 30°F; 27 September 2026
Wettest day: 0.75 in; 7 September 2026

Every month, season and year

Months

Seasons

Years

Missoula, MT the day's answers

All-time records

Every answer in words

September 2026 brought 2.13 in of precipitation in Missoula, MT, the wettest September since 2019, 20th wettest of 127.
The hottest day of September 2026 in Missoula, MT: 88°F on Tuesday 1 September 2026.
The coldest night of September 2026 in Missoula, MT: a low of 30°F on Sunday 27 September 2026.
The wettest day of September 2026 in Missoula, MT: 0.75 in on Monday 7 September 2026.