International Falls, MN: September

30 September 2026: September 2026 averaged 57.2°F in International Falls, MN, the warmest September since 2025, 17th warmest of 99.

September 2026

Mean temperature: 57.2°F; Warmest since 2025; 17th warmest of 99
Precipitation: 3.41 in; Wettest since 2024; 44th wettest of 109

A normal September in International Falls, MN (1991 to 2020): a mean temperature of 54.3°F, between 51.8°F and 57.9°F in eight years of ten and 2.49 in of precipitation, between 1.19 in and 5.90 in in eight years of ten.

The mean temperature of every September in International Falls, MN since 1897: 57.2°F in 2026; the highest is 62.3°F, in 2024.

Normal range, 51.8 to 57.9°F

Every year, ranked, as a table

Every September in International Falls, MN from 1897 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	57.2	17	68.5	21	45.8	19	3.41	44	0
2025	58.2	12	70.3	11	46	17	1.40	89	0
2024	62.3	1	75.9	2	48.7	1	3.58	37	0
2023	59.2	6	70.5	10	47.7	4	3.14	48	2
2022	56.1	27	67.5	29	44.7	29	2.36	62	0
2021	59	7	71.2	9	46.9	7	3.23	47	0
2020	52.6	71	64.9	58	40.2	81	1.81	79	0
2019	55.8	32	64.5	65	47.1	6	6.64	5	0
2018	53.8	55	64.8	60	42.9	51	3.66	34	0
2017	56	28	67.3	32	44.7	29	3.07	51	0
2016	57.1	18	67.4	31	46.7	8	3.33	45	0
2015	59	7	71.8	8	46.2	12	1.18	100	0
2014	54.4	48	65.4	55	43.3	45	3.10	50	0
2013	57.8	13	69.7	14	45.8	19	2.01	72	0
2012	51.5	83	67	37	35.9	100	0.85	104	0
2011	53	65	68.1	26	37.9	97	1.65	87	0
2010	49.9	92	60.8	93	39	90	6.02	7	0
2009	59.7	5	73.1	5	46.3	11	1.87	76	0
2008	53.4	61	64.7	61	42.2	64	4.19	24	0
2007	53.9	54	65.6	53	42.2	64	4.98	13	0
2006	53	65	65.9	49	40	84	1.38	92	0
2005	55.8	32	68.9	18	42.6	60	1.33	94	0
2004	58.5	9	69.7	14	47.3	5	5.99	8	0
2003	54.2	50	65.6	53	42.8	57	2.17	68	0
2002	56.9	20	69.4	17	44.3	33	1.19	98	0
2001	54.3	49	67.3	32	41.3	73	2.11	70	0
2000	52.1	75	65.1	57	39.1	89	2.00	73	0
1999	51.9	77	61.4	88	42.4	61	5.89	9	0
1998	56.5	22	70.1	13	42.9	51	0.28	107	0
1997	56.4	23	68.5	21	44.2	34	3.90	29	0
1996	55.5	36	66.1	45	44.9	27	2.64	58	0
1995	53.2	63	66	47	40.4	80	3.56	40	0
1994	57.8	13	68.9	18	46.7	8	3.67	33	0
1993	48.5	97	58.6	98	38.4	93	2.04	71	0
1992	52.9	68	64.4	66	41.5	69	2.34	64	0
1991	51.8	79	62.5	80	41.1	74	4.94	14	0
1990	55.6	34	67.2	34	43.9	39	1.23	96	0
1989	55	44	67.1	36	42.9	51	1.92	74	0
1988	53.8	55	63.7	72	43.9	39	3.93	28	0
1987	56.2	26	67	37	45.4	25	1.38	92	0
1986	52.4	74	61.9	84	42.9	51	2.42	61	0
1985	51.2	85	60.8	93	41.5	69	2.97	53	0
1984	49	94	59.7	96	38.2	94	1.14	101	0
1983	55.1	43	64.6	62	45.6	21	4.23	22	0
1982	53.6	58	64	69	43.3	45	3.63	35	0
1981	54	52	64.6	62	43.4	44	4.12	25	0
1980	52.8	70	62.7	79	42.8	57	4.08	26	0
1979	52.9	68	64.2	67	41.5	69	0.69	106	0
1978	56	28	65.8	51	46.2	12	3.62	36	0
1977	52.5	72	61	91	44	38	6.81	2	0
1976	53.6	58	67.5	29	39.7	85	1.19	98	0
1975	50.6	90	61.4	88	39.7	85	1.66	86	0
1974	48.6	96	59.1	97	38.1	95	0.86	103	0
1973	53	65	64.1	68	41.8	67	6.81	2	0
1972	51.1	86	63.2	74	39	90	1.70	85	0
1971	55.6	34	67.6	28	43.6	42	5.22	12	0
1970	55.5	36	66.9	39	44.2	34	2.80	55	0
1969	54.9	46	65.9	49	43.9	39	1.77	80	0
1968	56	28	66.4	43	45.5	24	4.33	21	0
1967	56.6	21	70.2	12	43.1	49	1.76	81	0
1966	54	52	66.4	43	41.6	68	1.22	97	0
1965	46.4	99	54.8	100	38.1	95	6.14	6	0
1964	51	87	62.8	78	39.3	88	3.32	46	0
1963	57.1	18	69.6	16	44.6	31	2.52	59	0
1962	51.9	77	63.7	72	40.1	83	3.57	38	0
1961	52.1	75	61.3	90	42.9	51	7.36	1	0
1960	53.4	61	66	47	40.8	78	1.88	75	0
1959	53.2	63	63.9	70	42.4	61	2.69	57	0
1958	54.1	51	65.4	55	42.8	57	2.12	69	0
1957	51	87	63.2	74	38.8	92	3.47	43	0
1956	48.8	95	61.6	87	35.9	100	1.72	83	0
1955	52.5	72	64.6	62	40.5	79	5.37	10	0
1954	51.4	84	61.8	85	41	75	2.99	52	0
1953	51.7	80	62.5	80	41	75	3.87	30	0
1952	55.4	39	67.7	27	43	50	0.28	107	0
1951	50.6	90	60.2	95	40.9	77	3.57	38	0
1950	54.5	47	65.8	51	43.2	48	3.50	42	0
1949	50.9	89	62.2	82	39.7	85	1.39	90	0
1948	58.5	9	72.1	7	44.9	27	3.13	49	0
1947	51.7	80	63.1	76	40.2	81	5.32	11	0
1946							3.75	31	30
1945							4.45	18	30
1944							1.71	84	30
1943							2.29	66	30
1942							4.42	19	30
1941							6.79	4	30
1940							2.34	64	30
1926	46.8	98	56.2	99	37.7	98	4.47	17	2
1925					45.6	21	4.90	15	30
1924			61	91			2.77	56	29
1922	59.8	4	76.3	1	43.3	45	1.49	88	0
1921	58.3	11	72.5	6	44.2	34	4.04	27	0
1920					48	3	2.22	67	30
1919	55	44	63.8	71	46.2	12	2.35	63	0
1918	49.9	92	63.1	76	36.7	99	0.74	105	1
1917	55.3	41	66.6	42	44.2	34	1.39	90	1
1916	57.3	16	66.9	39	48.3	2	4.20	23	2
1915	56.4	23	66.8	41	46	17	3.75	31	0
1914	57.5	15	68.8	20	46.1	15	3.54	41	0
1913	56.4	23	68.2	24	44.5	32	1.86	77	0
1912	56	28	66.1	45	45.6	21	4.40	20	3
1911	53.5	60	64.9	58	42.1	66	1.00	102	0
1910	55.5	36	68.2	24	42.9	51	2.47	60	1
1909	55.4	39	68.3	23	42.4	61	2.93	54	0
1908	53.7	57	61.8	85	46.1	15	1.75	82	1
1907	51.6	82	62.1	83	41.5	69	1.86	77	1
1906	60.7	2	74.6	4	46.7	8	1.25	95	0
1898	55.3	41	67.2	34	43.5	43	4.56	16	0
1897	60.6	3	75.8	3	45.3	26	0.20	109	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2024	62.3
1906	60.7
1897	60.6
1922	59.8
2009	59.7
2023	59.2
2021	59
2015	59
2004	58.5
1948	58.5

Coldest
Year	Mean, °F
1965	46.4
1926	46.8
1993	48.5
1974	48.6
1956	48.8
1984	49
2010	49.9
1918	49.9
1975	50.6
1951	50.6

Wettest
Year	Precipitation, in
1961	7.36
1977	6.81
1973	6.81
1941	6.79
2019	6.64
1965	6.14
2010	6.02
2004	5.99
1999	5.89
1955	5.37

Driest
Year	Precipitation, in
1897	0.20
1998	0.28
1952	0.28
1979	0.69
1918	0.74
2012	0.85
1974	0.86
1911	1.00
1984	1.14
2015	1.18

The hottest, coldest and wettest days

Hottest day: 83°F; 6 September 2026
Coldest night: 27°F; 22 September 2026
Wettest day: 0.73 in; 29 September 2026

Every month, season and year

Months

Seasons

Years

International Falls, MN the day's answers

All-time records

Every answer in words

September 2026 brought 3.41 in of precipitation in International Falls, MN, the wettest September since 2024, 44th wettest of 109.
The hottest day of September 2026 in International Falls, MN: 83°F on Sunday 6 September 2026.
The coldest night of September 2026 in International Falls, MN: a low of 27°F on Tuesday 22 September 2026.
The wettest day of September 2026 in International Falls, MN: 0.73 in on Tuesday 29 September 2026.