September weather in Hot Springs, SD
The average temperature in Hot Springs in September is 62.5°F (45.4°F–79.7°F). Average precipitation: 1.40 inches.
September is a fall month in Hot Springs, and is warmer than the annual average of 48.6°F. Daily temperatures swing about 34.3°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
79.7°F
Avg Low
45.4°F
Precipitation
1.40 in
Snow
0.1 in
September records in Hot Springs
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1940) | 34.0°F (1908) | 1.01 in (1963) |
| September 2 | 102.0°F (1983) | 30.9°F (1974) | 1.71 in (1973) |
| September 3 | 102.0°F (2024) | 28.9°F (1974) | 0.85 in (2007) |
| September 4 | 102.9°F (1960) | 34.0°F (1961) | 1.18 in (2016) |
| September 5 | 100.9°F (2020) | 34.0°F (1962) | 2.10 in (1938) |
| September 6 | 102.9°F (2020) | 30.0°F (2025) | 1.08 in (1911) |
| September 7 | 102.0°F (1931) | 32.0°F (2010) | 0.79 in (1946) |
| September 8 | 102.0°F (1931) | 30.9°F (1992) | 0.80 in (1989) |
| September 9 | 100.9°F (1931) | 30.0°F (1943) | 1.50 in (1900) |
| September 10 | 100.0°F (1931) | 28.0°F (1962) | 1.04 in (2003) |
| September 11 | 98.1°F (1931) | 28.0°F (1989) | 0.54 in (1991) |
| September 12 | 97.0°F (1934) | 28.0°F (2020) | 1.00 in (1915) |
| September 13 | 96.1°F (2018) | 28.0°F (1974) | 0.80 in (1910) |
| September 14 | 98.1°F (1935) | 24.1°F (1993) | 0.91 in (1970) |
| September 15 | 98.1°F (1948) | 26.1°F (1916) | 0.89 in (1950) |
| September 16 | 100.0°F (1948) | 27.0°F (1897) | 1.50 in (1913) |
| September 17 | 97.0°F (2000) | 26.1°F (1971) | 0.61 in (1942) |
| September 18 | 96.1°F (1914) | 23.0°F (1991) | 1.18 in (1946) |
| September 19 | 98.1°F (1914) | 24.1°F (1991) | 1.30 in (1955) |
| September 20 | 100.0°F (1937) | 21.9°F (1927) | 1.77 in (1955) |
| September 21 | 97.0°F (1937) | 24.1°F (1975) | 1.65 in (1998) |
| September 22 | 96.1°F (1936) | 23.0°F (1995) | 0.67 in (1986) |
| September 23 | 95.0°F (1935) | 27.0°F (1956) | 2.05 in (1977) |
| September 24 | 95.0°F (1992) | 24.1°F (1926) | 1.46 in (1918) |
| September 25 | 91.9°F (2014) | 16.0°F (1926) | 0.91 in (1959) |
| September 26 | 98.1°F (2024) | 12.9°F (1926) | 1.10 in (1930) |
| September 27 | 98.1°F (2024) | 18.0°F (1926) | 0.34 in (1912) |
| September 28 | 97.0°F (2024) | 21.0°F (1985) | 1.60 in (1923) |
| September 29 | 98.1°F (2024) | 18.0°F (1984) | 1.83 in (2014) |
| September 30 | 91.9°F (1938) | 19.9°F (1958) | 2.05 in (2014) |