September weather in Saco, MT
The average temperature in Saco in September is 56.9°F (42.3°F–71.5°F). Average precipitation: 1.35 inches.
September is a fall month in Saco, and is warmer than the annual average of 42°F. Daily temperatures swing about 29.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
71.5°F
Avg Low
42.3°F
Precipitation
1.35 in
Daylight
12h 20m
September records in Saco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1983) | 32.0°F (1972) | 0.91 in (2008) |
| September 2 | 100.0°F (1991) | 37.9°F (1966) | 0.15 in (2008) |
| September 3 | 97.0°F (1969) | 33.1°F (1968) | 0.33 in (1999) |
| September 4 | 98.1°F (2022) | 37.9°F (1966) | 1.12 in (2002) |
| September 5 | 98.1°F (1967) | 35.1°F (1972) | 0.34 in (2016) |
| September 6 | 98.1°F (2009) | 30.0°F (2012) | 0.74 in (1985) |
| September 7 | 95.0°F (1966) | 28.9°F (1986) | 0.94 in (2020) |
| September 8 | 99.0°F (2022) | 28.0°F (2020) | 0.49 in (2013) |
| September 9 | 95.0°F (1998) | 28.0°F (2020) | 0.83 in (1986) |
| September 10 | 95.0°F (1998) | 28.0°F (1992) | 1.35 in (2010) |
| September 11 | 97.0°F (1966) | 23.0°F (1989) | 0.21 in (1978) |
| September 12 | 93.0°F (1990) | 23.0°F (1970) | 1.56 in (1978) |
| September 13 | 93.0°F (1969) | 18.0°F (1970) | 0.71 in (1967) |
| September 14 | 84.0°F (2009) | 27.0°F (1993) | 0.30 in (1967) |
| September 15 | 91.9°F (1998) | 24.1°F (1970) | 1.00 in (1996) |
| September 16 | 93.0°F (1998) | 21.9°F (1973) | 0.64 in (2006) |
| September 17 | 93.9°F (2009) | 28.0°F (1973) | 1.07 in (1996) |
| September 18 | 91.0°F (1984) | 19.9°F (1991) | 0.68 in (1996) |
| September 19 | 96.1°F (2009) | 21.0°F (1991) | 0.72 in (2013) |
| September 20 | 84.9°F (1966) | 21.9°F (1983) | 1.16 in (1986) |
| September 21 | 84.0°F (2025) | 23.0°F (1972) | 0.82 in (2018) |
| September 22 | 88.0°F (1966) | 21.9°F (1983) | 0.40 in (2010) |
| September 23 | 93.0°F (1992) | 24.1°F (1984) | 1.07 in (2016) |
| September 24 | 91.0°F (2011) | 25.0°F (1993) | 0.31 in (1972) |
| September 25 | 93.0°F (2001) | 26.1°F (1984) | 2.11 in (1986) |
| September 26 | 93.0°F (2024) | 23.0°F (1972) | 0.06 in (1997) |
| September 27 | 90.0°F (1967) | 24.1°F (1981) | 0.53 in (2013) |
| September 28 | 90.0°F (1967) | 17.1°F (1972) | 0.61 in (1982) |
| September 29 | 91.0°F (2024) | 19.0°F (1984) | 0.45 in (1966) |
| September 30 | 90.0°F (1992) | 17.1°F (1985) | 0.61 in (1977) |