September weather in Winner, SD
The average temperature in Winner in September is 65.8°F (52.0°F–79.5°F). Average precipitation: 2.15 inches.
September is a fall month in Winner, and is warmer than the annual average of 49.7°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
79.5°F
Avg Low
52.0°F
Precipitation
2.15 in
Daylight
12h 17m
September records in Winner
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1983) | 37.9°F (1981) | 1.25 in (1963) |
| September 2 | 104.0°F (1983) | 33.1°F (1935) | 2.14 in (2008) |
| September 3 | 104.0°F (2023) | 39.9°F (1974) | 1.85 in (1986) |
| September 4 | 104.0°F (1933) | 39.9°F (1935) | 1.30 in (1999) |
| September 5 | 105.1°F (1933) | 37.0°F (1965) | 1.27 in (2016) |
| September 6 | 104.0°F (1976) | 36.0°F (1929) | 1.10 in (1948) |
| September 7 | 102.9°F (1933) | 36.0°F (1986) | 1.20 in (1946) |
| September 8 | 104.0°F (1931) | 39.0°F (1992) | 2.60 in (1951) |
| September 9 | 108.0°F (1931) | 33.1°F (1943) | 1.29 in (1951) |
| September 10 | 104.0°F (1931) | 34.0°F (1943) | 0.68 in (1934) |
| September 11 | 100.0°F (1998) | 33.1°F (1955) | 2.10 in (2019) |
| September 12 | 100.9°F (1939) | 33.1°F (1989) | 1.65 in (2019) |
| September 13 | 102.0°F (1939) | 32.0°F (1949) | 1.43 in (2001) |
| September 14 | 99.0°F (1939) | 30.9°F (1993) | 1.47 in (2001) |
| September 15 | 102.9°F (1955) | 28.9°F (1916) | 0.90 in (2004) |
| September 16 | 100.0°F (1926) | 30.0°F (1916) | 1.90 in (1986) |
| September 17 | 98.1°F (1940) | 30.0°F (1981) | 0.50 in (1968) |
| September 18 | 98.1°F (1933) | 30.9°F (1991) | 1.30 in (2025) |
| September 19 | 100.0°F (1984) | 25.0°F (1991) | 2.22 in (1996) |
| September 20 | 99.0°F (1937) | 28.0°F (1927) | 1.39 in (1950) |
| September 21 | 100.0°F (1937) | 28.0°F (1914) | 1.60 in (1950) |
| September 22 | 105.1°F (1935) | 26.1°F (1995) | 0.75 in (1959) |
| September 23 | 100.9°F (1935) | 28.0°F (1989) | 1.25 in (2023) |
| September 24 | 100.0°F (1935) | 26.1°F (1942) | 2.41 in (2015) |
| September 25 | 97.0°F (1967) | 27.0°F (1928) | 1.15 in (1976) |
| September 26 | 97.0°F (1914) | 24.1°F (1942) | 0.60 in (1976) |
| September 27 | 100.0°F (1956) | 19.9°F (1935) | 0.30 in (1945) |
| September 28 | 91.0°F (2021) | 25.0°F (1951) | 0.75 in (1973) |
| September 29 | 96.1°F (1933) | 25.0°F (1984) | 1.72 in (1973) |
| September 30 | 99.0°F (2005) | 26.1°F (1974) | 1.17 in (1977) |