September weather in Mount Crested Butte, CO
The average temperature in Mount Crested Butte in September is °F (°F–°F). Average precipitation: 1.97 inches.
September is a fall month in Mount Crested Butte, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 14m.
Avg High
°F
Avg Low
°F
Precipitation
1.97 in
Daylight
12h 14m
September records in Mount Crested Butte
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.2°F (2002) | 33.4°F (1992) | 0.60 in (1994) |
| September 2 | 80.6°F (2019) | 33.1°F (1986) | 0.30 in (2001) |
| September 3 | 111.2°F (2002) | 32.9°F (1986) | 0.60 in (2015) |
| September 4 | 112.8°F (2002) | 29.3°F (2004) | 0.60 in (2004) |
| September 5 | 79.9°F (1998) | 26.4°F (2004) | 0.60 in (2007) |
| September 6 | 111.2°F (2002) | 31.3°F (2004) | 0.40 in (1991) |
| September 7 | 90.3°F (2002) | 27.7°F (2001) | 0.60 in (1995) |
| September 8 | 107.4°F (2002) | 23.0°F (2020) | 1.30 in (2020) |
| September 9 | 108.3°F (2002) | 22.5°F (2020) | 1.20 in (2003) |
| September 10 | 103.5°F (2002) | 27.1°F (2003) | 0.70 in (2003) |
| September 11 | 97.7°F (2002) | 24.8°F (2003) | 0.80 in (2012) |
| September 12 | 78.8°F (1990) | 29.1°F (2003) | 1.10 in (2013) |
| September 13 | 93.9°F (2002) | 27.5°F (1989) | 1.30 in (2013) |
| September 14 | 110.5°F (2002) | 24.4°F (2003) | 0.60 in (1981) |
| September 15 | 111.7°F (2002) | 24.1°F (1991) | 0.90 in (2009) |
| September 16 | 109.4°F (2002) | 24.6°F (1991) | 0.80 in (1990) |
| September 17 | 95.7°F (2002) | 20.5°F (2006) | 0.70 in (2007) |
| September 18 | 73.6°F (2018) | 21.7°F (2003) | 0.80 in (2013) |
| September 19 | 96.6°F (2002) | 21.4°F (1996) | 0.80 in (1999) |
| September 20 | 98.1°F (2002) | 28.0°F (1996) | 0.70 in (1982) |
| September 21 | 70.3°F (2012) | 23.4°F (2009) | 0.90 in (2024) |
| September 22 | 109.8°F (2002) | 20.1°F (1995) | 1.00 in (2013) |
| September 23 | 72.0°F (1987) | 20.5°F (2006) | 0.50 in (1984) |
| September 24 | 105.8°F (2002) | 20.1°F (2000) | 0.40 in (2012) |
| September 25 | 102.7°F (2002) | 21.2°F (2000) | 0.60 in (1986) |
| September 26 | 92.1°F (2002) | 18.7°F (1996) | 0.30 in (2002) |
| September 27 | 84.2°F (2002) | 12.9°F (1996) | 0.50 in (1990) |
| September 28 | 92.7°F (2002) | 19.8°F (2013) | 0.90 in (1985) |
| September 29 | 84.7°F (2002) | 23.0°F (1988) | 0.90 in (1995) |
| September 30 | 95.0°F (2002) | 20.3°F (2007) | 0.70 in (1994) |