September weather in Billings, MT
The average temperature in Billings in September is 61.4°F (48.6°F–74.3°F). Average precipitation: 1.36 inches. Average snowfall is 0.3 inches.
September is a fall month in Billings, and is warmer than the annual average of 48.2°F. Daily temperatures swing about 25.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
74.3°F
Avg Low
48.6°F
Precipitation
1.36 in
Snow
0.3 in
September records in Billings
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1983) | 43.0°F (1952) | 1.15 in (1973) |
| September 2 | 99.0°F (1998) | 35.1°F (1974) | 0.78 in (1999) |
| September 3 | 100.9°F (2022) | 39.0°F (1951) | 0.59 in (1971) |
| September 4 | 100.0°F (1950) | 30.9°F (1962) | 0.54 in (1987) |
| September 5 | 102.0°F (2020) | 37.0°F (1956) | 0.47 in (1993) |
| September 6 | 97.0°F (1980) | 36.0°F (1956) | 0.62 in (1976) |
| September 7 | 102.0°F (2022) | 34.0°F (1962) | 1.31 in (2013) |
| September 8 | 99.0°F (1979) | 32.0°F (1962) | 0.51 in (1962) |
| September 9 | 95.0°F (1998) | 30.9°F (1962) | 0.34 in (1961) |
| September 10 | 91.9°F (1966) | 33.1°F (1989) | 1.12 in (1961) |
| September 11 | 96.1°F (1959) | 28.0°F (1989) | 0.97 in (1988) |
| September 12 | 93.0°F (1981) | 30.0°F (1970) | 1.06 in (1993) |
| September 13 | 91.9°F (1959) | 28.9°F (1970) | 2.19 in (1966) |
| September 14 | 97.0°F (1948) | 30.9°F (1970) | 1.21 in (2013) |
| September 15 | 95.0°F (2000) | 30.9°F (1965) | 1.22 in (2017) |
| September 16 | 93.9°F (1979) | 28.9°F (1965) | 1.05 in (1959) |
| September 17 | 91.0°F (2009) | 26.1°F (1965) | 0.46 in (2006) |
| September 18 | 91.9°F (1984) | 28.0°F (1971) | 1.97 in (1978) |
| September 19 | 93.0°F (1981) | 26.1°F (1983) | 0.68 in (2000) |
| September 20 | 90.0°F (1966) | 26.1°F (1983) | 0.68 in (2019) |
| September 21 | 88.0°F (1979) | 28.0°F (1995) | 0.67 in (1991) |
| September 22 | 88.0°F (2011) | 25.0°F (2000) | 0.55 in (2006) |
| September 23 | 91.0°F (1966) | 23.0°F (1984) | 0.84 in (2007) |
| September 24 | 91.9°F (2020) | 21.9°F (1984) | 0.43 in (1958) |
| September 25 | 95.0°F (2015) | 26.1°F (1972) | 0.46 in (1972) |
| September 26 | 93.0°F (2015) | 25.0°F (1972) | 0.31 in (2013) |
| September 27 | 91.0°F (1963) | 27.0°F (1951) | 0.86 in (1974) |
| September 28 | 91.9°F (2010) | 26.1°F (1984) | 0.40 in (2019) |
| September 29 | 93.9°F (2024) | 26.1°F (1985) | 0.34 in (1950) |
| September 30 | 90.0°F (1963) | 23.0°F (1985) | 0.54 in (2022) |