September weather in McIntosh, SD
The average temperature in McIntosh in September is 61.5°F (47.7°F–75.3°F). Average precipitation: 1.45 inches.
September is a fall month in McIntosh, and is warmer than the annual average of 45°F. Daily temperatures swing about 27.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
75.3°F
Avg Low
47.7°F
Precipitation
1.45 in
Daylight
12h 18m
September records in McIntosh
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (1929) | 34.0°F (1981) | 2.92 in (1986) |
| September 2 | 102.9°F (1971) | 34.0°F (1917) | 1.52 in (2018) |
| September 3 | 100.9°F (2015) | 33.1°F (1918) | 2.18 in (1973) |
| September 4 | 102.0°F (1922) | 34.0°F (1962) | 0.68 in (1941) |
| September 5 | 102.9°F (1945) | 32.0°F (1929) | 0.58 in (1938) |
| September 6 | 102.9°F (1976) | 27.0°F (1929) | 1.43 in (1981) |
| September 7 | 100.9°F (1931) | 33.1°F (1929) | 2.46 in (1941) |
| September 8 | 104.0°F (1959) | 32.0°F (1918) | 1.64 in (2013) |
| September 9 | 100.9°F (1931) | 28.0°F (2020) | 0.92 in (1962) |
| September 10 | 100.9°F (1982) | 25.0°F (1940) | 0.98 in (1979) |
| September 11 | 98.1°F (1990) | 28.9°F (1940) | 1.02 in (2009) |
| September 12 | 100.9°F (2017) | 30.0°F (1983) | 1.56 in (2019) |
| September 13 | 97.0°F (2015) | 27.0°F (1923) | 0.99 in (1967) |
| September 14 | 99.0°F (1948) | 26.1°F (1993) | 1.32 in (2001) |
| September 15 | 102.9°F (1948) | 24.1°F (1916) | 1.17 in (2025) |
| September 16 | 96.1°F (2002) | 24.1°F (1916) | 0.56 in (1921) |
| September 17 | 97.0°F (1989) | 28.0°F (1916) | 0.76 in (1942) |
| September 18 | 98.1°F (1998) | 25.0°F (1929) | 1.41 in (1996) |
| September 19 | 93.9°F (2022) | 21.9°F (1991) | 0.60 in (1931) |
| September 20 | 91.9°F (1960) | 16.0°F (1918) | 1.46 in (1955) |
| September 21 | 97.0°F (1922) | 21.9°F (1983) | 1.38 in (1955) |
| September 22 | 93.9°F (1922) | 19.9°F (1995) | 1.03 in (2006) |
| September 23 | 98.1°F (1958) | 25.0°F (1983) | 1.85 in (1977) |
| September 24 | 99.0°F (1936) | 21.0°F (1942) | 0.97 in (1973) |
| September 25 | 91.0°F (1990) | 10.0°F (1926) | 1.00 in (1923) |
| September 26 | 99.0°F (2024) | 18.0°F (1942) | 1.40 in (1929) |
| September 27 | 97.0°F (1952) | 17.1°F (1927) | 0.35 in (1944) |
| September 28 | 93.9°F (2021) | 19.9°F (1951) | 0.55 in (1923) |
| September 29 | 99.0°F (2024) | 23.0°F (1984) | 0.70 in (1965) |
| September 30 | 95.0°F (1989) | 19.0°F (1974) | 1.05 in (2014) |