Kalispell, MT: September

30 September 2026: September 2026 averaged 54.8°F in Kalispell, MT, the warmest September since 2025, tied 54th warmest of 128 (with 2007, 1991, 1956 and 4 other years).

September 2026

Mean temperature: 54.8°F; Warmest since 2025; 54th warmest of 128
Precipitation: 2.82 in; Wettest since 1985; 6th wettest of 128

A normal September in Kalispell, MT (1991 to 2020): a mean temperature of 54.8°F, between 51.8°F and 57.7°F in eight years of ten and 1.16 in of precipitation, between 0.43 in and 1.98 in in eight years of ten.

The mean temperature of every September in Kalispell, MT since 1899: 54.8°F in 2026; the highest is 62.4°F, in 1938.

Normal range, 51.8 to 57.7°F

Every year, ranked, as a table

Every September in Kalispell, MT from 1899 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	54.8	54	67.8	77	41.7	33	2.82	6	0
2025	61.3	2	78.8	3	43.8	9	0.72	86	0
2024	60.6	4	76.8	6	44.4	7	0.82	77	0
2023	56.2	31	70.4	46	42.1	28	0.99	67	0
2022	57.6	16	75.8	10	39.4	75	1.08	61	0
2021	55.6	41	72.2	24	39	83	1.00	66	0
2020	56.2	31	73.9	18	38.4	92	0.37	110	0
2019	55.7	37	68.6	67	42.8	20	2.52	13	0
2018	53.1	86	68.6	67	37.6	107	0.56	95	0
2017	55.1	48	70.4	46	39.7	69	0.52	97	0
2016	53.4	82	68.7	65	38.1	99	0.87	75	0
2015	53.7	81	70.2	48	37.2	111	0.75	83	0
2014	55.1	48	71.1	36	39.2	78	1.14	59	0
2013	58	13	71.5	30	44.5	6	2.41	15	0
2012	55.8	36	75.5	12	36	123	0.44	105	0
2011	57.3	18	75.1	13	39.5	73	0.47	102	0
2010	54.1	73	67.3	81	40.9	48	1.81	32	0
2009	57.7	15	77.1	5	38.2	95	0.14	123	0
2008	54.9	53	71.4	32	38.4	92	1.26	49	0
2007	54.8	54	71.4	32	38.2	95	1.07	62	0
2006	54.5	65	70.9	39	38.1	99	1.18	56	0
2005	52.6	93	67.2	82	38.1	99	2.74	11	0
2004	52.6	93	63.7	109	41.4	40	1.91	27	0
2003	56.4	29	71.4	32	41.5	36	1.93	25	0
2002	54.7	62	69.6	58	39.8	66	1.23	51	0
2001	58.5	10	76.3	9	40.7	52	0.59	93	0
2000	51.8	104	66.1	88	37.4	109	1.39	45	0
1999	51.4	108	69.8	53	33	128	0.28	117	0
1998	59.3	7	77.2	4	41.3	41	1.32	46	0
1997	55.6	41	69.7	56	41.5	36	1.50	42	0
1996	51.5	107	64.4	101	38.5	91	1.71	34	0
1995	54.5	65	70.1	50	38.8	87	1.19	55	0
1994	55.6	41	74.8	16	36.4	116	0.45	104	0
1993	52.4	97	68.3	73	36.4	116	1.61	37	0
1992	51.8	104	67	84	36.5	114	1.02	65	0
1991	54.8	54	71.6	28	37.9	106	0.67	91	0
1990	59.8	5	79	2	40.6	53	0.01	128	0
1989	53.3	84	68	75	38.6	89	1.55	40	0
1988	54.3	70	69.8	53	38.8	87	2.10	20	0
1987	56.5	25	74.9	15	38.1	99	0.60	92	0
1986	51.2	110	59.8	122	42.6	23	2.78	7	0
1985	47.9	126	58.4	126	37.3	110	3.97	1	0
1984	50.5	116	62.9	113	38.1	99	1.88	28	0
1983	50.5	116	64.8	96	36.3	119	1.31	47	0
1982	53.3	84	68	75	38.6	89	1.92	26	0
1981	55.3	47	72.3	23	38.2	95	0.48	101	0
1980	55.5	44	69.2	61	41.8	30	0.74	85	0
1979	58.5	10	76.4	8	40.6	53	0.39	109	0
1978	54	74	66.3	86	41.6	34	0.80	79	0
1977	52.2	99	64.8	96	39.6	71	2.18	17	0
1976	56.7	22	73.9	18	39.6	71	0.36	111	0
1975	54.5	65	70.9	39	38.1	99	0.58	94	0
1974	53.8	78	71.3	35	36.3	119	1.18	56	0
1973	54.7	62	69.7	56	39.8	66	0.71	87	0
1972	51	113	65.1	94	37	113	0.76	81	0
1971	49.1	120	64.6	99	33.6	127	0.46	103	0
1970	48.9	123	64.1	105	33.7	126	0.90	73	0
1969	55.7	37	71	37	40.4	59	1.44	44	0
1968	53	88	65.1	94	40.9	48	3.33	3	0
1967	59.5	6	79.2	1	39.7	69	0.33	112	0
1966	59.3	7	75.7	11	42.9	16	0.29	116	0
1965	45.1	128	55.7	128	34.5	125	1.17	58	0
1964	50.1	119	63.7	109	36.4	116	1.87	30	0
1963	58.8	9	75	14	42.7	22	1.26	49	0
1962	53.9	76	70.5	45	37.2	111	0.42	107	0
1961	49.1	120	62.5	117	35.7	124	2.08	21	0
1960	54.6	64	73	20	36.3	119	0.33	112	0
1959	52.9	90	64.1	105	41.6	34	3.84	2	0
1958	54.4	68	68.3	73	40.6	53	1.84	31	0
1957	55.4	45	72.5	21	38.2	95	0.20	121	0
1956	54.8	54	70.1	50	39.4	75	0.92	71	0
1955	53.1	86	67.1	83	39.2	78	1.55	40	0
1954	52.9	90	65.9	90	39.8	66	0.81	78	0
1953	56.5	25	72.4	22	40.5	57	0.44	105	0
1952	56.7	22	74.1	17	39.2	78	0.12	125	0
1951	52	101	64.6	99	39.4	75	1.88	28	0
1950	54.8	54	70.8	43	38.9	86	0.54	96	0
1949	55.1	48	71	37	39.1	82	0.95	70	0
1948	54.8	54	68.6	67	41	46	0.10	126	0
1947	54.4	68	65.5	92	43.3	13	0.99	67	0
1946	53.8	78	65.3	93	42.2	26	1.30	48	0
1945	52	101	63.4	112	40.6	53	1.57	39	0
1944	56.5	25	68.6	67	44.4	7	0.75	83	0
1943	56.5	25	71.6	28	41.5	36	0.23	118	0
1942	56.1	34	69.2	61	42.9	16	0.31	114	0
1941	50.5	116	59.2	124	41.8	30	2.04	22	0
1940	60.8	3	71.8	27	49.8	1	1.69	35	0
1939	56.2	31	68.9	64	43.4	12	0.96	69	0
1938	62.4	1	76.8	6	48.1	2	1.14	59	1
1937	58.1	12	71.5	30	44.7	4	0.91	72	0
1936	54.3	70	67.7	78	40.9	48	1.04	63	0
1935	57.5	17	72.1	25	42.9	16	0.14	123	0
1934	51.1	111	62.8	115	39.5	73	0.71	87	0
1933	52.2	99	64.1	105	40.3	60	1.04	63	0
1932	54.8	54	69.6	58	40	62	0.15	122	0
1931	54.8	54	65.8	91	43.7	10	2.89	5	0
1930	56.9	20	68.7	65	45.1	3	2.67	12	0
1929	51.6	106	64.3	103	39	83	0.51	99	0
1928	55.1	48	69	63	41.3	41	0.04	127	0
1927	52.9	90	62.9	113	42.9	16	2.76	8	0
1926	46.3	127	56.3	127	36.3	119	2.14	18	0
1925	53.9	76	64.2	104	43.6	11	2.43	14	0
1924	53.8	78	67.7	78	39.9	64	0.90	73	0
1923	57	19	72.1	25	41.9	29	0.23	118	0
1922	57.8	14	70.9	39	44.6	5	0.52	97	0
1921	48.8	124	59.5	123	38	105	0.79	80	0
1920	54.3	70	66.2	87	42.3	25	0.70	89	0
1919	54	74	66.9	85	41.1	45	0.50	100	0
1918	56.7	22	70.1	50	43.3	13	1.59	38	1
1917	56.9	20	70.9	39	42.8	20	0.83	76	0
1916	53	88	66.1	88	39.9	64	1.63	36	0
1915	51.4	108	62.8	115	40	62	2.04	22	0
1914	52.6	93	64.7	98	40.5	57	1.21	52	0
1913	53.4	82	68.6	67	38.3	94	0.31	114	0
1912	48.4	125	60.2	121	36.5	114	0.68	90	0
1911	51.1	111	62	119	40.1	61	2.75	9	0
1910	52.3	98	63.7	109	41	46	2.31	16	0
1909	55.4	45	68.5	72	42.2	26	1.21	52	0
1908	55.7	37	70.2	48	41.2	43	2.01	24	0
1907	52.6	93	64.4	101	40.9	48	2.12	19	0
1906	56	35	70.8	43	41.2	43	0.23	118	0
1905	56.3	30	69.4	60	43.1	15	1.21	52	0
1904	55.7	37	69.8	53	41.5	36	0.40	108	0
1903	50.8	114	62.5	117	39.2	78	1.49	43	0
1902	50.8	114	64	108	37.6	107	0.76	81	0
1901	49.1	120	59.2	124	39	83	1.81	32	0
1900	51.9	103	62	119	41.8	30	3.02	4	0
1899	55	52	67.4	80	42.6	23	2.75	9	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1938	62.4
2025	61.3
1940	60.8
2024	60.6
1990	59.8
1967	59.5
1998	59.3
1966	59.3
1963	58.8
2001	58.5
More years share the last value

Coldest
Year	Mean, °F
1965	45.1
1926	46.3
1985	47.9
1912	48.4
1921	48.8
1970	48.9
1971	49.1
1961	49.1
1901	49.1
1964	50.1

Wettest
Year	Precipitation, in
1985	3.97
1959	3.84
1968	3.33
1900	3.02
1931	2.89
2026	2.82
1986	2.78
1927	2.76
1911	2.75
1899	2.75

Driest
Year	Precipitation, in
1990	0.01
1928	0.04
1948	0.10
1952	0.12
2009	0.14
1935	0.14
1932	0.15
1957	0.20
1943	0.23
1923	0.23
More years share the last value

The hottest, coldest and wettest days

Hottest day: 84°F; 1 September 2026
Coldest night: 25°F; 28 September 2026
Wettest day: 1.17 in; 7 September 2026

Every month, season and year

Months

Seasons

Years

Kalispell, MT the day's answers

All-time records

Every answer in words

September 2026 brought 2.82 in of precipitation in Kalispell, MT, the wettest September since 1985, 6th wettest of 128.
The hottest day of September 2026 in Kalispell, MT: 84°F on Tuesday 1 September 2026.
The coldest night of September 2026 in Kalispell, MT: a low of 25°F on Monday 28 September 2026.
The wettest day of September 2026 in Kalispell, MT: 1.17 in on Monday 7 September 2026.