September weather in Alberton, MT
The average temperature in Alberton in September is 57.6°F (39.6°F–75.7°F). Average precipitation: 1.07 inches.
September is a fall month in Alberton, and is warmer than the annual average of 45.4°F. Daily temperatures swing about 36.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
75.7°F
Avg Low
39.6°F
Precipitation
1.07 in
Snow
0.1 in
September records in Alberton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (2022) | 32.0°F (2006) | 0.96 in (2000) |
| September 2 | 97.0°F (2025) | 28.9°F (1973) | 0.45 in (1963) |
| September 3 | 100.0°F (2025) | 32.0°F (1958) | 0.45 in (2015) |
| September 4 | 99.0°F (2025) | 30.9°F (1969) | 0.53 in (1970) |
| September 5 | 96.1°F (2020) | 33.1°F (1969) | 0.24 in (2015) |
| September 6 | 95.0°F (2019) | 30.0°F (1969) | 0.25 in (1959) |
| September 7 | 95.0°F (1958) | 33.1°F (1969) | 0.42 in (1973) |
| September 8 | 95.0°F (1958) | 30.0°F (1962) | 0.35 in (2020) |
| September 9 | 93.0°F (1969) | 30.0°F (1962) | 0.43 in (2019) |
| September 10 | 93.0°F (1958) | 30.9°F (2020) | 0.53 in (2005) |
| September 11 | 91.9°F (1958) | 30.0°F (1971) | 0.59 in (1969) |
| September 12 | 93.0°F (1959) | 26.1°F (2014) | 1.22 in (2024) |
| September 13 | 93.0°F (2017) | 25.0°F (1974) | 0.22 in (2024) |
| September 14 | 91.0°F (2013) | 21.9°F (1970) | 0.60 in (1959) |
| September 15 | 86.0°F (2002) | 23.0°F (1970) | 0.97 in (1965) |
| September 16 | 91.0°F (2019) | 24.1°F (1973) | 0.52 in (2006) |
| September 17 | 91.0°F (2009) | 21.0°F (1965) | 0.25 in (2003) |
| September 18 | 86.0°F (2023) | 25.0°F (1965) | 0.54 in (2004) |
| September 19 | 88.0°F (2025) | 26.1°F (1965) | 0.25 in (1969) |
| September 20 | 89.1°F (2025) | 32.0°F (2018) | 0.80 in (2017) |
| September 21 | 91.0°F (1967) | 21.9°F (1971) | 0.33 in (2000) |
| September 22 | 90.0°F (1967) | 25.0°F (1971) | 0.98 in (2022) |
| September 23 | 90.0°F (2014) | 26.1°F (2000) | 1.08 in (2022) |
| September 24 | 91.0°F (2011) | 25.0°F (2000) | 0.59 in (1973) |
| September 25 | 93.0°F (2014) | 24.1°F (1970) | 0.45 in (1959) |
| September 26 | 89.1°F (2014) | 27.0°F (1970) | 0.48 in (2020) |
| September 27 | 84.9°F (1963) | 28.0°F (1961) | 0.33 in (2019) |
| September 28 | 91.0°F (1967) | 28.0°F (1999) | 0.30 in (1962) |
| September 29 | 87.1°F (2025) | 25.0°F (1972) | 0.23 in (2013) |
| September 30 | 86.0°F (2020) | 25.0°F (1974) | 0.40 in (1967) |