September weather in Buffalo Gap, SD
The average temperature in Buffalo Gap in September is 61.0°F (42.8°F–79.1°F). Average precipitation: 1.45 inches.
September is a fall month in Buffalo Gap, and is warmer than the annual average of 47.2°F. Daily temperatures swing about 36.3°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
79.1°F
Avg Low
42.8°F
Precipitation
1.45 in
Daylight
12h 17m
September records in Buffalo Gap
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1975) | 36.0°F (1981) | 0.60 in (1984) |
| September 2 | 104.0°F (1983) | 37.0°F (1972) | 1.12 in (1973) |
| September 3 | 102.0°F (1971) | 36.0°F (1975) | 0.58 in (1999) |
| September 4 | 100.0°F (1990) | 36.0°F (2010) | 0.61 in (2016) |
| September 5 | 102.0°F (2022) | 32.0°F (2017) | 1.15 in (2004) |
| September 6 | 104.0°F (2020) | 28.9°F (2025) | 0.82 in (2004) |
| September 7 | 102.9°F (1978) | 33.1°F (2017) | 0.20 in (2001) |
| September 8 | 102.0°F (1983) | 30.0°F (1992) | 1.10 in (1985) |
| September 9 | 98.1°F (1977) | 30.0°F (1992) | 1.07 in (2002) |
| September 10 | 102.0°F (1979) | 27.0°F (2020) | 1.20 in (2003) |
| September 11 | 100.0°F (1998) | 28.0°F (2020) | 0.76 in (2023) |
| September 12 | 96.1°F (1990) | 28.0°F (1975) | 0.55 in (2019) |
| September 13 | 100.9°F (1990) | 28.0°F (2014) | 1.01 in (2002) |
| September 14 | 95.0°F (2015) | 25.0°F (1993) | 0.28 in (1984) |
| September 15 | 96.1°F (2015) | 26.1°F (1993) | 0.59 in (1982) |
| September 16 | 97.0°F (1992) | 30.0°F (2014) | 0.42 in (2017) |
| September 17 | 93.9°F (1979) | 26.1°F (1971) | 0.25 in (1982) |
| September 18 | 100.0°F (2000) | 24.1°F (1991) | 0.64 in (1996) |
| September 19 | 98.1°F (1998) | 21.9°F (1991) | 0.73 in (1993) |
| September 20 | 93.9°F (1979) | 21.9°F (1983) | 0.93 in (1990) |
| September 21 | 93.9°F (2010) | 25.0°F (1975) | 1.64 in (1998) |
| September 22 | 93.0°F (2013) | 25.0°F (1995) | 0.48 in (2002) |
| September 23 | 95.0°F (2007) | 27.0°F (1983) | 1.04 in (1977) |
| September 24 | 96.1°F (1992) | 28.0°F (1975) | 0.59 in (2013) |
| September 25 | 93.9°F (1992) | 28.0°F (1984) | 0.42 in (2018) |
| September 26 | 95.0°F (2014) | 19.0°F (1972) | 0.44 in (1996) |
| September 27 | 96.1°F (2014) | 21.0°F (1972) | 0.03 in (1996) |
| September 28 | 96.1°F (2021) | 26.1°F (1976) | 1.12 in (2019) |
| September 29 | 93.9°F (2021) | 17.1°F (1984) | 0.52 in (1988) |
| September 30 | 91.9°F (2022) | 19.9°F (1984) | 3.20 in (2014) |