Grand Forks, ND: September

30 September 2026: September 2026 averaged 62.3°F in Grand Forks, ND, the warmest September since 2025, tied 8th warmest of 86 (with 1997).

September 2026

Mean temperature: 62.3°F; Warmest since 2025; 8th warmest of 86
Precipitation: 5.29 in; Wettest since 2019; 3rd wettest of 86

A normal September in Grand Forks, ND (1991 to 2020): a mean temperature of 58.2°F, between 55.3°F and 61.7°F in eight years of ten and 1.86 in of precipitation, between 0.72 in and 4.40 in in eight years of ten.

The mean temperature of every September in Grand Forks, ND since 1941: 62.3°F in 2026; the highest is 67°F, in 2024.

Normal range, 55.3 to 61.7°F

Every year, ranked, as a table

Every September in Grand Forks, ND from 1941 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
2026	62.3	8	72.9	22	51.8	2	5.29	3
2025	62.9	5	75.2	9	50.6	4	1.95	39
2024	67	1	80.1	1	53.9	1	0.43	78
2023	63.7	3	76.9	2	50.4	5	2.60	25
2022	60.2	17	73.4	16	46.9	21	0.53	74
2021	63	4	76.1	5	49.9	6	1.37	52
2020	56.9	44	69.8	39	44	57	0.30	82
2019	59.3	25	68.8	50	49.8	7	8.14	1
2018	55.3	67	67.3	61	43.4	63	2.22	34
2017	60	19	71.9	25	48.2	16	4.45	10
2016	60.1	18	71.1	28	49.1	11	4.16	13
2015	62.4	7	75.5	8	49.3	10	0.84	63
2014	59.5	23	71.9	25	47.1	19	1.29	55
2013	61.6	11	73.5	15	49.7	8	1.97	38
2012	57.3	41	73.3	18	41.3	80	0.20	84
2011	59.3	25	73	20	45.6	32	2.89	24
2010	55.4	65	65.2	76	45.6	32	5.28	4
2009	64.2	2	76.7	3	51.7	3	0.78	66
2008	57.3	41	69	45	45.7	30	4.39	11
2007	58.1	33	70.9	32	45.3	38	0.80	65
2006	56.8	45	69.1	44	44.5	51	2.45	28
2005	60	19	73.2	19	46.8	24	1.27	56
2004	59.8	21	70.6	34	49	12	4.24	12
2003	56.6	47	68.3	54	45	45	2.38	32
2002	59.5	23	71.2	27	47.7	17	0.87	61
2001	57.9	35	70.5	36	45.3	38	1.37	52
2000	55.5	64	68.6	53	42.4	74	1.53	46
1999	53.5	80	64.2	83	42.8	69	2.55	27
1998	60.4	15	75.8	7	44.9	47	0.26	83
1997	62.3	8	75	11	49.6	9	1.77	43
1996	58.3	31	69.8	39	46.8	24	1.94	40
1995	57.5	39	70.2	37	44.8	48	2.41	30
1994	61.2	12	73.4	16	48.9	13	1.41	51
1993	53.6	79	65.4	75	41.7	78	0.77	67
1992	55.2	70	67.6	57	42.8	69	1.50	48
1991	57.4	40	68.9	48	45.8	29	3.45	17
1990	60.3	16	73.8	14	46.9	21	1.83	42
1989	57.9	35	71.1	28	44.7	49	0.86	62
1988	56.3	51	68.3	54	44.3	55	2.00	37
1987	58.1	33	70.8	33	45.3	38	1.86	41
1986	55.6	63	64.7	80	46.4	27	2.40	31
1985	52.9	81	62.8	85	43	68	1.10	59
1984	52.5	84	65.5	74	39.5	84	0.33	81
1983	56.5	48	67.6	57	45.3	38	3.03	23
1982	56.3	51	68.9	48	43.7	60	1.56	45
1981	55.9	59	68.7	52	43.1	67	5.02	6
1980	55.7	62	67.4	60	43.9	58	2.12	35
1979	58.9	28	72.7	23	45	45	0.44	77
1978	61.7	10	74.6	12	48.8	14	3.91	14
1977	56.1	55	64.7	80	47.6	18	3.40	19
1976	59.3	25	75.2	9	43.4	63	0.58	71
1975	53.7	77	66.6	66	40.8	82	0.46	76
1974	51.4	85	65	78	37.8	85	0.54	73
1973	55.3	67	67.1	65	43.4	63	4.85	8
1972	52.7	83	64.3	82	41.2	81	2.42	29
1971	57.7	38	70	38	45.4	36	2.57	26
1970	57.9	35	68.8	50	47.1	19	3.29	20
1969	56.4	50	68.3	54	44.5	51	3.61	16
1968	56	57	67.6	57	44.4	54	1.65	44
1967	59.6	22	73	20	46.2	28	1.35	54
1966	57.1	43	71.1	28	43.2	66	0.58	71
1965	46.3	86	54.9	86	37.7	86	5.57	2
1964	56.2	53	67.3	61	45.1	44	3.41	18
1963	60.8	13	75.9	6	45.6	32	0.53	74
1962	54.2	74	65.8	72	42.6	71	2.05	36
1961	56.1	55	66.4	67	45.7	30	3.22	21
1960	58.4	30	72.2	24	44.5	51	1.50	48
1959	56.8	45	69	45	44.6	50	0.83	64
1958	58.3	31	71.1	28	45.4	36	1.16	57
1957	54.4	73	65	78	43.8	59	4.90	7
1956	52.9	81	66.2	69	39.7	83	0.13	86
1955	55.8	61	69.4	41	42.2	75	0.99	60
1954	55.4	65	65.6	73	45.3	38	1.50	48
1953	56.5	48	69.4	41	43.7	60	1.53	46
1952	60.5	14	74.3	13	46.6	26	0.36	80
1951	53.9	75	64.1	84	43.7	60	1.12	58
1950	58.8	29	70.6	34	46.9	21	5.17	5
1949	55.3	67	69	45	41.6	79	0.64	70
1948	62.6	6	76.7	3	48.5	15	0.43	78
1947	54.9	72	67.2	63	42.6	71	2.29	33
1946	55.2	70	66.2	69	44.2	56	3.13	22
1945	53.7	77	65.2	76	42.2	75	3.67	15
1944	56.2	53	67.2	63	45.2	43	0.65	69
1943	55.9	59	69.2	43	42.5	73	0.15	85
1942	53.9	75	65.9	71	42	77	0.72	68
1941	56	57	66.4	67	45.6	32	4.72	9

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2024	67
2009	64.2
2023	63.7
2021	63
2025	62.9
1948	62.6
2015	62.4
2026	62.3
1997	62.3
1978	61.7

Coldest
Year	Mean, °F
1965	46.3
1974	51.4
1984	52.5
1972	52.7
1985	52.9
1956	52.9
1999	53.5
1993	53.6
1975	53.7
1945	53.7

Wettest
Year	Precipitation, in
2019	8.14
1965	5.57
2026	5.29
2010	5.28
1950	5.17
1981	5.02
1957	4.90
1973	4.85
1941	4.72
2017	4.45

Driest
Year	Precipitation, in
1956	0.13
1943	0.15
2012	0.20
1998	0.26
2020	0.30
1984	0.33
1952	0.36
2024	0.43
1948	0.43
1979	0.44

The hottest, coldest and wettest days

Hottest day: 85°F; 10 September 2026
Coldest night: 36°F; 16 September 2026
Wettest day: 1.20 in; 6 September 2026

Every month, season and year

Months

Seasons

Years

Grand Forks, ND the day's answers

All-time records

Every answer in words

September 2026 brought 5.29 in of precipitation in Grand Forks, ND, the wettest September since 2019, 3rd wettest of 86.
The hottest day of September 2026 in Grand Forks, ND: 85°F on Thursday 10 September 2026.
The coldest night of September 2026 in Grand Forks, ND: a low of 36°F on Wednesday 16 September 2026.
The wettest day of September 2026 in Grand Forks, ND: 1.20 in on Sunday 6 September 2026.