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Brookings September Weather

Averages and records for weather in Brookings, South Dakota in the month of September.

Typical Brookings September Weather 1991–2020
Average daily high	72.0 °F
Average daily low	48.0 °F
Average monthly precipitation	3.1 inches
Average monthly snow	0.0 inches
Daily chance of precipitation	27.9%
Daily chance of snow	0.11%

Brookings September Weather Records 1893–2024
Highest temperature	102 °F	September 10, 1931
Lowest temperature	12 °F	September 29, 1899
Highest daily low	85 °F	September 14, 1939
Lowest daily high	41 °F	September 24, 1965
Hottest average high temperature	82.0 °F	1939
Coldest average high temperature	59.7 °F	1965
Most daily precipitation	4.1 inches	September 17, 1986
Most monthly precipitation	8.4 inches	2010
Most daily snow	2.0 inches	September 25, 1912
Most monthly snow	2.0 inches	1912

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	76.9	53.9	98	32
September 2	76.7	53.7	97	36
September 3	76.5	53.4	99	25
September 4	76.3	53.2	99	31
September 5	76.1	52.9	99	29
September 6	75.7	52.6	99	31
September 7	75.4	52.1	100	32
September 8	74.9	51.7	99	32
September 9	74.4	51.1	100	29
September 10	74.0	50.7	102	27
September 11	73.6	50.2	96	22
September 12	73.2	49.7	95	23
September 13	72.8	49.2	98	26
September 14	72.5	48.7	98	31
September 15	72.1	48.2	97	24
September 16	71.8	47.8	95	25
September 17	71.6	47.3	100	20
September 18	71.2	46.8	93	23
September 19	70.8	46.3	98	16
September 20	70.2	45.8	94	21
September 21	69.7	45.3	95	23
September 22	69.0	44.8	91	17
September 23	68.6	44.4	92	23
September 24	68.3	44.0	90	18
September 25	67.9	43.6	89	18
September 26	67.5	43.1	92	23
September 27	67.1	42.6	96	19
September 28	66.7	42.1	91	20
September 29	66.2	41.6	91	12
September 30	65.8	41.2	86	19

Weather Station Details

Years	Station	Coordinates
1893–2024	Brookings 2 NE	location