September weather in Gunnison, CO
The average temperature in Gunnison in September is 51.9°F (33.6°F–70.3°F). Average precipitation: 1.22 inches. Average snowfall is 0.2 inches.
September is a fall month in Gunnison, and is warmer than the annual average of 37.7°F. Daily temperatures swing about 36.7°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 14m. For travel, September is cool.
Avg High
70.3°F
Avg Low
33.6°F
Precipitation
1.22 in
Snow
0.2 in
September records in Gunnison
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 89.1°F (1954) | 21.9°F (1932) | 0.60 in (1906) |
| September 2 | 89.1°F (1932) | 21.9°F (1962) | 0.35 in (1938) |
| September 3 | 91.0°F (1930) | 23.0°F (1973) | 0.46 in (1968) |
| September 4 | 90.0°F (1932) | 23.0°F (1962) | 0.35 in (1909) |
| September 5 | 88.0°F (1960) | 23.0°F (1962) | 0.75 in (1909) |
| September 6 | 88.0°F (1924) | 25.0°F (1895) | 0.62 in (1970) |
| September 7 | 88.0°F (1959) | 24.1°F (2010) | 0.72 in (1903) |
| September 8 | 87.1°F (1940) | 25.0°F (1893) | 0.42 in (1941) |
| September 9 | 84.9°F (1979) | 19.0°F (1962) | 1.20 in (2020) |
| September 10 | 84.9°F (1958) | 15.1°F (1962) | 1.16 in (1918) |
| September 11 | 84.9°F (1895) | 18.0°F (1898) | 0.63 in (2003) |
| September 12 | 82.9°F (1956) | 21.9°F (1924) | 0.85 in (1970) |
| September 13 | 82.9°F (1956) | 19.0°F (1951) | 0.81 in (1970) |
| September 14 | 87.1°F (1894) | 19.0°F (1928) | 0.41 in (1919) |
| September 15 | 86.0°F (1990) | 17.1°F (1894) | 0.52 in (1912) |
| September 16 | 89.1°F (1992) | 12.9°F (1894) | 0.35 in (1997) |
| September 17 | 86.0°F (1990) | 19.0°F (1968) | 0.55 in (1990) |
| September 18 | 84.9°F (1935) | 19.0°F (2006) | 0.36 in (2007) |
| September 19 | 87.1°F (1935) | 14.0°F (1924) | 0.45 in (1999) |
| September 20 | 84.9°F (1895) | 15.1°F (1975) | 0.52 in (1982) |
| September 21 | 87.1°F (1983) | 9.0°F (1978) | 0.75 in (1952) |
| September 22 | 91.9°F (1983) | 15.1°F (1912) | 0.58 in (1913) |
| September 23 | 90.0°F (1983) | 12.9°F (1912) | 0.45 in (1997) |
| September 24 | 81.0°F (1936) | 14.0°F (1946) | 0.50 in (1927) |
| September 25 | 79.0°F (1948) | 14.0°F (1901) | 0.58 in (1935) |
| September 26 | 81.0°F (1953) | 15.1°F (1920) | 0.49 in (1906) |
| September 27 | 82.0°F (1953) | 14.0°F (1908) | 0.57 in (1959) |
| September 28 | 80.1°F (1952) | 12.9°F (1975) | 0.86 in (1990) |
| September 29 | 81.0°F (1938) | 14.0°F (1975) | 0.50 in (1904) |
| September 30 | 82.0°F (1957) | 14.0°F (1974) | 0.43 in (1971) |