September weather in Miles City, MT
The average temperature in Miles City in September is 61.2°F (46.9°F–75.6°F). Average precipitation: 1.07 inches.
September is a fall month in Miles City, and is warmer than the annual average of 46.2°F. Daily temperatures swing about 28.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
75.6°F
Avg Low
46.9°F
Precipitation
1.07 in
Daylight
12h 19m
September records in Miles City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 106.0°F (1983) | 37.9°F (1974) | 1.60 in (1963) |
| September 2 | 102.0°F (2015) | 32.0°F (1974) | 0.90 in (1973) |
| September 3 | 102.0°F (2005) | 37.0°F (1961) | 1.36 in (1973) |
| September 4 | 105.1°F (1950) | 30.0°F (1962) | 0.72 in (2016) |
| September 5 | 100.0°F (1978) | 37.0°F (1956) | 0.52 in (1954) |
| September 6 | 97.0°F (1980) | 35.1°F (1943) | 0.50 in (2001) |
| September 7 | 105.1°F (2022) | 37.0°F (1986) | 2.67 in (1941) |
| September 8 | 99.0°F (1958) | 30.2°F (2020) | 1.74 in (1946) |
| September 9 | 100.0°F (1998) | 30.2°F (2020) | 0.86 in (1946) |
| September 10 | 93.9°F (1958) | 34.0°F (1955) | 0.99 in (1961) |
| September 11 | 98.1°F (1959) | 28.0°F (1989) | 0.58 in (1991) |
| September 12 | 95.0°F (1958) | 28.9°F (1970) | 1.11 in (1978) |
| September 13 | 97.0°F (1959) | 28.0°F (1949) | 0.51 in (1967) |
| September 14 | 99.0°F (1948) | 30.0°F (1993) | 0.89 in (2004) |
| September 15 | 100.9°F (1948) | 32.0°F (1970) | 2.04 in (1991) |
| September 16 | 100.0°F (2000) | 28.0°F (1965) | 0.89 in (1945) |
| September 17 | 93.9°F (2000) | 25.0°F (1965) | 0.65 in (1942) |
| September 18 | 98.1°F (2021) | 28.0°F (1965) | 1.26 in (1978) |
| September 19 | 99.0°F (1937) | 28.9°F (1943) | 0.96 in (1985) |
| September 20 | 95.0°F (1937) | 28.0°F (1983) | 0.54 in (2018) |
| September 21 | 93.9°F (1938) | 19.0°F (1995) | 0.45 in (1941) |
| September 22 | 93.9°F (1938) | 27.0°F (1995) | 1.60 in (2023) |
| September 23 | 98.1°F (1992) | 26.1°F (1965) | 0.38 in (1941) |
| September 24 | 93.9°F (2020) | 26.1°F (2000) | 1.32 in (2016) |
| September 25 | 97.0°F (2014) | 24.1°F (1942) | 0.60 in (1972) |
| September 26 | 95.0°F (2015) | 19.9°F (1942) | 0.60 in (1941) |
| September 27 | 91.0°F (1943) | 21.9°F (1951) | 0.94 in (1982) |
| September 28 | 95.0°F (2001) | 26.1°F (1972) | 1.15 in (2019) |
| September 29 | 100.0°F (2024) | 26.1°F (1939) | 0.37 in (1950) |
| September 30 | 93.0°F (1989) | 21.0°F (1985) | 1.00 in (1977) |