September weather in Dubois, WY
The average temperature in Dubois in September is 51.8°F (34.8°F–68.8°F). Average precipitation: 1.30 inches. Average snowfall is 0.8 inches.
September is a fall month in Dubois, and is warmer than the annual average of 40.5°F. Daily temperatures swing about 34°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 17m. For travel, September is cool.
Avg High
68.8°F
Avg Low
34.8°F
Precipitation
1.30 in
Snow
0.8 in
September records in Dubois
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 89.1°F (1954) | 21.0°F (1908) | 0.86 in (1966) |
| September 2 | 91.0°F (2022) | 25.0°F (1959) | 0.70 in (1961) |
| September 3 | 88.0°F (2019) | 25.0°F (1974) | 0.72 in (1915) |
| September 4 | 86.0°F (1950) | 24.1°F (1978) | 0.87 in (1999) |
| September 5 | 91.9°F (2022) | 21.9°F (1908) | 0.44 in (2016) |
| September 6 | 93.0°F (1978) | 21.9°F (1956) | 0.46 in (1984) |
| September 7 | 91.9°F (1978) | 24.1°F (1956) | 0.32 in (1965) |
| September 8 | 93.9°F (2022) | 21.0°F (1907) | 0.78 in (2020) |
| September 9 | 87.1°F (1932) | 17.1°F (2020) | 0.74 in (1927) |
| September 10 | 90.0°F (1932) | 19.9°F (1907) | 0.58 in (2003) |
| September 11 | 84.0°F (1932) | 19.9°F (1925) | 1.22 in (1997) |
| September 12 | 86.0°F (1990) | 17.1°F (2014) | 0.70 in (1997) |
| September 13 | 87.1°F (2015) | 18.0°F (2014) | 0.60 in (1908) |
| September 14 | 86.0°F (1990) | 12.9°F (1907) | 0.82 in (1982) |
| September 15 | 84.0°F (1990) | 14.0°F (1907) | 1.01 in (2017) |
| September 16 | 82.9°F (1928) | 17.1°F (1936) | 0.52 in (2013) |
| September 17 | 91.9°F (1932) | 10.9°F (1907) | 0.57 in (1959) |
| September 18 | 88.0°F (1932) | 17.1°F (1971) | 0.57 in (2013) |
| September 19 | 89.1°F (1932) | 10.9°F (1978) | 1.00 in (1990) |
| September 20 | 82.9°F (1910) | 8.1°F (1983) | 0.70 in (1990) |
| September 21 | 82.0°F (1933) | 8.1°F (1983) | 0.49 in (1963) |
| September 22 | 87.1°F (1936) | 12.0°F (1983) | 0.78 in (2017) |
| September 23 | 84.9°F (1936) | 15.1°F (1926) | 1.61 in (1984) |
| September 24 | 84.0°F (2015) | 18.0°F (1926) | 1.08 in (1915) |
| September 25 | 84.9°F (2015) | 8.1°F (1984) | 0.62 in (1927) |
| September 26 | 89.1°F (2015) | 10.0°F (1908) | 2.00 in (1923) |
| September 27 | 84.0°F (1978) | 5.0°F (1908) | 1.01 in (1923) |
| September 28 | 84.0°F (2021) | 12.0°F (1999) | 1.20 in (1940) |
| September 29 | 84.0°F (2010) | 10.9°F (1911) | 1.53 in (1940) |
| September 30 | 82.9°F (2024) | 9.0°F (1985) | 0.94 in (1950) |