September weather in Belle Fourche, SD
The average temperature in Belle Fourche in September is 62.2°F (46.5°F–77.8°F). Average precipitation: 1.34 inches.
September is a fall month in Belle Fourche, and is warmer than the annual average of 47.9°F. Daily temperatures swing about 31.3°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
77.8°F
Avg Low
46.5°F
Precipitation
1.34 in
Daylight
12h 18m
September records in Belle Fourche
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1929) | 34.0°F (1949) | 1.21 in (1957) |
| September 2 | 102.9°F (1960) | 32.0°F (1952) | 0.62 in (1920) |
| September 3 | 99.0°F (1971) | 32.0°F (1959) | 0.52 in (1926) |
| September 4 | 105.1°F (1960) | 28.9°F (1962) | 0.90 in (1983) |
| September 5 | 106.0°F (1978) | 32.0°F (1962) | 1.32 in (1971) |
| September 6 | 107.1°F (1978) | 28.0°F (1956) | 2.17 in (1981) |
| September 7 | 106.0°F (1978) | 33.1°F (1929) | 1.28 in (1941) |
| September 8 | 104.0°F (1959) | 26.1°F (1929) | 0.75 in (2020) |
| September 9 | 100.0°F (1979) | 28.9°F (2020) | 1.22 in (2002) |
| September 10 | 100.0°F (1952) | 26.1°F (1962) | 2.50 in (2003) |
| September 11 | 96.1°F (1908) | 28.9°F (1921) | 0.94 in (2008) |
| September 12 | 100.9°F (1981) | 27.0°F (1989) | 1.65 in (1980) |
| September 13 | 97.0°F (1959) | 28.9°F (1949) | 1.86 in (1998) |
| September 14 | 100.0°F (1948) | 25.0°F (1993) | 0.82 in (2019) |
| September 15 | 102.0°F (1948) | 21.9°F (1916) | 1.10 in (2017) |
| September 16 | 96.1°F (1908) | 30.0°F (1965) | 2.13 in (1913) |
| September 17 | 93.0°F (2000) | 30.0°F (1916) | 0.93 in (1923) |
| September 18 | 96.1°F (1914) | 25.0°F (1991) | 1.30 in (1946) |
| September 19 | 96.1°F (2021) | 21.9°F (1991) | 0.50 in (1993) |
| September 20 | 95.0°F (1960) | 21.0°F (1927) | 1.64 in (1995) |
| September 21 | 95.0°F (1922) | 21.9°F (1995) | 0.63 in (1989) |
| September 22 | 93.9°F (2007) | 18.0°F (1995) | 0.86 in (1910) |
| September 23 | 95.0°F (1958) | 26.1°F (1983) | 0.79 in (1977) |
| September 24 | 93.9°F (1992) | 19.9°F (1926) | 1.23 in (1918) |
| September 25 | 95.0°F (2014) | 10.0°F (1926) | 1.87 in (1986) |
| September 26 | 95.0°F (1909) | 18.0°F (1942) | 0.48 in (1915) |
| September 27 | 95.0°F (1952) | 10.0°F (1934) | 0.40 in (1982) |
| September 28 | 93.0°F (1957) | 21.9°F (1951) | 2.35 in (1923) |
| September 29 | 93.0°F (2021) | 21.0°F (1912) | 1.18 in (1927) |
| September 30 | 97.0°F (1909) | 21.9°F (1920) | 1.46 in (2014) |