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Winner September Weather

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

Typical Winner September Weather 1991–2020
Average daily high	79.5 °F
Average daily low	52.4 °F
Average monthly precipitation	2.1 inches
Average monthly snow	none
Daily chance of precipitation	16.4%
Daily chance of snow	0%

Winner September Weather Records 1910–2024
Highest temperature	108 °F	September 9, 1931
Lowest temperature	20 °F	September 27, 1935
Highest daily low	78 °F	September 7, 1945
Lowest daily high	38 °F	September 24, 1912
Hottest average high temperature	88.6 °F	1940
Coldest average high temperature	64.3 °F	1965
Most daily precipitation	2.6 inches	September 8, 1951
Most monthly precipitation	7.7 inches	1986
Most daily snow	6.0 inches	September 28, 1985
Most monthly snow	6.0 inches	1985

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	84.9	58.2	102	38
September 2	84.7	57.9	104	33
September 3	84.5	57.7	104	40
September 4	84.2	57.4	104	40
September 5	83.9	57.0	105	37
September 6	83.5	56.6	104	36
September 7	83.1	56.1	103	36
September 8	82.6	55.6	104	39
September 9	82.0	55.1	108	33
September 10	81.6	54.7	104	34
September 11	81.2	54.2	100	33
September 12	80.7	53.8	101	33
September 13	80.4	53.3	102	32
September 14	80.0	52.9	99	31
September 15	79.6	52.5	103	29
September 16	79.3	52.2	100	30
September 17	78.8	51.7	98	30
September 18	78.2	51.3	98	31
September 19	77.6	50.8	100	25
September 20	76.9	50.2	99	28
September 21	76.2	49.6	100	28
September 22	75.7	49.2	105	26
September 23	75.3	48.7	101	28
September 24	74.9	48.3	100	26
September 25	74.5	47.9	97	27
September 26	74.0	47.4	97	24
September 27	73.6	46.9	100	20
September 28	73.2	46.5	91	25
September 29	72.7	46.1	96	25
September 30	72.2	45.7	99	26

Weather Station Details

Years	Station	Coordinates
1910–2024	Winner	location