September weather in Choteau, MT
The average temperature in Choteau in September is 55.7°F (39.8°F–71.6°F). Average precipitation: 1.16 inches. Average snowfall is 0.9 inches.
September is a fall month in Choteau, and is warmer than the annual average of 43.8°F. Daily temperatures swing about 31.8°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
71.6°F
Avg Low
39.8°F
Precipitation
1.16 in
Snow
0.9 in
September records in Choteau
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1940) | 28.9°F (2006) | 0.80 in (2008) |
| September 2 | 95.0°F (1893) | 30.0°F (2008) | 0.88 in (1944) |
| September 3 | 96.1°F (1893) | 27.0°F (1962) | 0.77 in (1999) |
| September 4 | 93.9°F (1893) | 28.0°F (1929) | 0.50 in (2015) |
| September 5 | 93.9°F (1967) | 26.1°F (1956) | 1.11 in (2015) |
| September 6 | 91.9°F (1893) | 24.1°F (1895) | 0.65 in (2013) |
| September 7 | 93.9°F (2022) | 24.1°F (1929) | 0.64 in (2020) |
| September 8 | 91.9°F (1981) | 28.0°F (1943) | 0.86 in (1995) |
| September 9 | 91.0°F (1981) | 25.0°F (1896) | 0.75 in (2010) |
| September 10 | 91.9°F (1981) | 25.0°F (1921) | 0.54 in (2014) |
| September 11 | 91.0°F (1981) | 27.0°F (1921) | 0.70 in (1909) |
| September 12 | 91.0°F (1981) | 19.9°F (1949) | 0.77 in (1972) |
| September 13 | 91.0°F (1981) | 19.9°F (1949) | 0.89 in (1893) |
| September 14 | 89.1°F (1948) | 21.9°F (1970) | 0.87 in (1896) |
| September 15 | 90.0°F (1979) | 25.0°F (1969) | 0.94 in (2017) |
| September 16 | 88.0°F (1979) | 24.1°F (1936) | 1.36 in (2003) |
| September 17 | 90.0°F (1981) | 24.1°F (1965) | 1.90 in (2024) |
| September 18 | 91.9°F (1981) | 24.1°F (1944) | 1.37 in (1986) |
| September 19 | 89.1°F (1922) | 19.9°F (1957) | 0.68 in (1925) |
| September 20 | 90.0°F (1922) | 18.0°F (1925) | 2.12 in (1968) |
| September 21 | 88.0°F (1966) | 19.9°F (1932) | 0.63 in (1940) |
| September 22 | 88.0°F (1897) | 19.0°F (1932) | 1.46 in (1934) |
| September 23 | 89.1°F (1897) | 10.0°F (1926) | 0.82 in (2007) |
| September 24 | 89.1°F (2009) | -5.1°F (1926) | 0.38 in (1941) |
| September 25 | 89.1°F (1922) | 3.0°F (1934) | 1.10 in (1908) |
| September 26 | 91.9°F (1897) | 10.0°F (1908) | 0.83 in (1929) |
| September 27 | 91.9°F (1897) | 19.9°F (1908) | 1.07 in (1982) |
| September 28 | 90.0°F (2022) | 21.0°F (1999) | 1.59 in (2019) |
| September 29 | 90.0°F (1967) | 12.9°F (1919) | 0.60 in (2019) |
| September 30 | 89.1°F (1992) | 23.0°F (1933) | 0.60 in (1896) |