September weather in Terry, MT
The average temperature in Terry in September is 60.5°F (45.3°F–75.7°F). Average precipitation: 1.17 inches.
September is a fall month in Terry, and is warmer than the annual average of 45.3°F. Daily temperatures swing about 30.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
75.7°F
Avg Low
45.3°F
Precipitation
1.17 in
Daylight
12h 19m
September records in Terry
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1983) | 32.0°F (1994) | 0.41 in (1980) |
| September 2 | 106.0°F (1983) | 24.1°F (1974) | 1.98 in (1963) |
| September 3 | 100.0°F (1998) | 27.0°F (1974) | 2.55 in (1973) |
| September 4 | 100.9°F (1978) | 28.9°F (1962) | 0.48 in (1973) |
| September 5 | 105.1°F (1998) | 28.0°F (1965) | 0.70 in (1971) |
| September 6 | 102.0°F (1978) | 30.9°F (1956) | 0.55 in (1977) |
| September 7 | 98.1°F (1976) | 26.1°F (1986) | 0.72 in (2020) |
| September 8 | 102.0°F (2022) | 28.9°F (2020) | 0.82 in (2002) |
| September 9 | 99.0°F (1994) | 28.0°F (1988) | 0.85 in (1970) |
| September 10 | 102.0°F (1994) | 28.9°F (1989) | 0.98 in (1961) |
| September 11 | 93.9°F (1998) | 16.0°F (1989) | 0.33 in (2014) |
| September 12 | 96.1°F (1971) | 15.1°F (1989) | 0.97 in (2019) |
| September 13 | 97.0°F (1990) | 17.1°F (1989) | 0.42 in (1967) |
| September 14 | 95.0°F (1959) | 21.0°F (1993) | 0.25 in (2008) |
| September 15 | 97.0°F (2000) | 28.0°F (1993) | 1.73 in (1991) |
| September 16 | 93.9°F (1998) | 28.9°F (1970) | 0.97 in (1991) |
| September 17 | 96.1°F (1979) | 26.1°F (1965) | 0.56 in (1996) |
| September 18 | 93.9°F (2009) | 24.1°F (1991) | 0.85 in (2013) |
| September 19 | 97.0°F (2021) | 25.0°F (1991) | 1.42 in (1998) |
| September 20 | 93.9°F (2009) | 25.0°F (1982) | 1.15 in (2018) |
| September 21 | 90.0°F (1966) | 16.0°F (1995) | 0.80 in (1968) |
| September 22 | 86.0°F (1976) | 21.9°F (1983) | 0.50 in (2006) |
| September 23 | 91.0°F (1992) | 23.0°F (1983) | 0.40 in (2023) |
| September 24 | 91.0°F (2011) | 24.1°F (1985) | 0.50 in (1984) |
| September 25 | 93.0°F (2011) | 25.0°F (1984) | 1.10 in (1986) |
| September 26 | 98.1°F (2014) | 21.9°F (1965) | 0.62 in (1986) |
| September 27 | 95.0°F (2015) | 21.0°F (1976) | 1.56 in (1982) |
| September 28 | 91.0°F (2021) | 23.0°F (1992) | 0.61 in (1982) |
| September 29 | 93.9°F (2021) | 21.0°F (1990) | 0.16 in (1966) |
| September 30 | 99.0°F (2024) | 19.9°F (1985) | 0.48 in (1950) |