September weather in Townsend, MT
The average temperature in Townsend in September is 57.2°F (41.6°F–72.7°F). Average precipitation: 0.78 inches.
September is a fall month in Townsend, and is warmer than the annual average of 44.9°F. Daily temperatures swing about 31.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
72.7°F
Avg Low
41.6°F
Precipitation
0.78 in
Daylight
12h 19m
September records in Townsend
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1955) | 33.1°F (1952) | 0.76 in (1963) |
| September 2 | 96.1°F (2007) | 30.9°F (1959) | 0.62 in (1963) |
| September 3 | 99.0°F (2022) | 28.0°F (1968) | 0.11 in (1963) |
| September 4 | 93.9°F (1950) | 26.1°F (1962) | 1.30 in (2023) |
| September 5 | 91.9°F (1950) | 30.0°F (1966) | 0.38 in (1996) |
| September 6 | 95.0°F (1988) | 30.9°F (1956) | 0.75 in (2001) |
| September 7 | 93.9°F (2022) | 27.0°F (1992) | 0.71 in (1985) |
| September 8 | 95.0°F (1994) | 25.0°F (2020) | 0.70 in (1970) |
| September 9 | 91.9°F (1982) | 25.0°F (1962) | 0.72 in (2019) |
| September 10 | 99.0°F (1981) | 30.0°F (1983) | 0.42 in (1961) |
| September 11 | 90.0°F (1990) | 23.0°F (1989) | 0.69 in (1980) |
| September 12 | 91.0°F (1990) | 24.1°F (1989) | 0.83 in (2024) |
| September 13 | 91.9°F (1953) | 26.1°F (1949) | 0.27 in (1950) |
| September 14 | 90.0°F (1959) | 21.9°F (1970) | 0.47 in (2004) |
| September 15 | 93.0°F (2000) | 23.0°F (1970) | 0.45 in (2015) |
| September 16 | 91.0°F (1998) | 27.0°F (1970) | 0.75 in (2015) |
| September 17 | 90.0°F (2009) | 19.0°F (1965) | 0.38 in (1989) |
| September 18 | 89.1°F (1984) | 19.9°F (1965) | 1.32 in (2024) |
| September 19 | 90.0°F (1981) | 21.9°F (1965) | 1.00 in (1968) |
| September 20 | 88.0°F (1949) | 19.0°F (1983) | 0.80 in (1968) |
| September 21 | 84.9°F (1966) | 21.9°F (1983) | 0.46 in (1955) |
| September 22 | 87.1°F (1967) | 21.9°F (1961) | 0.97 in (2023) |
| September 23 | 89.1°F (1992) | 21.9°F (2000) | 0.45 in (2023) |
| September 24 | 88.0°F (1949) | 18.0°F (2000) | 0.62 in (2005) |
| September 25 | 91.9°F (2014) | 21.9°F (1970) | 0.44 in (1976) |
| September 26 | 89.1°F (2010) | 24.1°F (1951) | 0.66 in (2013) |
| September 27 | 86.0°F (2011) | 21.9°F (1961) | 0.83 in (1982) |
| September 28 | 86.0°F (1957) | 18.0°F (1984) | 0.14 in (1965) |
| September 29 | 90.0°F (1989) | 14.0°F (1985) | 0.26 in (2007) |
| September 30 | 86.0°F (1989) | 12.0°F (1950) | 1.26 in (1977) |