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Grand Forks September Weather

Averages and records for weather in Grand Forks, North Dakota in the month of September.

Typical Grand Forks September Weather 1991–2020
Average daily high	70.1 °F
Average daily low	47.5 °F
Average monthly precipitation	2.4 inches
Average monthly snow	none
Daily chance of precipitation	29.0%
Daily chance of snow	0%

Grand Forks September Weather Records 1893–2024
Highest temperature	102 °F	September 5, 1978
Lowest temperature	11 °F	September 27, 1893
Highest daily low	76 °F	September 1, 1921
Lowest daily high	39 °F	September 28, 1899
Hottest average high temperature	78.0 °F	1976
Coldest average high temperature	63.7 °F	1901
Most daily precipitation	4.7 inches	September 20, 2019
Most monthly precipitation	9.1 inches	2019
Most daily snow	0.5 inches	September 26, 1972
Most monthly snow	0.5 inches	1972

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	76.0	53.0	98	33
September 2	75.7	52.8	100	33
September 3	75.4	52.5	94	33
September 4	75.1	52.2	96	34
September 5	74.8	51.9	102	32
September 6	74.3	51.5	98	32
September 7	73.8	51.1	100	33
September 8	73.3	50.6	97	31
September 9	72.8	50.1	96	30
September 10	72.4	49.8	96	22
September 11	72.1	49.4	96	25
September 12	71.7	49.0	94	28
September 13	71.2	48.7	93	24
September 14	70.7	48.2	87	25
September 15	70.3	47.7	87	27
September 16	69.9	47.3	92	26
September 17	69.5	46.8	92	22
September 18	69.0	46.4	91	18
September 19	68.4	45.9	92	22
September 20	67.8	45.3	91	23
September 21	67.2	44.9	92	24
September 22	66.7	44.6	96	21
September 23	66.4	44.2	91	25
September 24	65.9	43.8	86	24
September 25	65.4	43.3	94	24
September 26	65.0	42.8	91	14
September 27	64.6	42.5	96	11
September 28	64.1	42.0	91	18
September 29	63.7	41.7	88	21
September 30	63.0	41.2	90	21

Weather Station Details

Years	Station	Coordinates
1893–2024	Grand Forks	location