September weather in Altamont, MO
The average temperature in Altamont in September is 65.7°F (54.3°F–77.1°F). Average precipitation: 4.53 inches.
September is a fall month in Altamont, and is warmer than the annual average of 51.6°F. Daily temperatures swing about 22.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
77.1°F
Avg Low
54.3°F
Precipitation
4.53 in
Daylight
12h 15m
September records in Altamont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1999) | 51.1°F (1992) | 2.37 in (1931) |
| September 2 | 98.1°F (2000) | 51.1°F (2009) | 2.35 in (1926) |
| September 3 | 95.0°F (1999) | 54.0°F (1992) | 1.38 in (1993) |
| September 4 | 95.0°F (1999) | 46.9°F (1997) | 2.12 in (1964) |
| September 5 | 95.0°F (1999) | 46.9°F (2011) | 2.73 in (1898) |
| September 6 | 98.1°F (1990) | 44.1°F (2011) | 2.91 in (1964) |
| September 7 | 96.1°F (1990) | 45.0°F (2011) | 1.90 in (2001) |
| September 8 | 97.0°F (1990) | 48.0°F (1966) | 2.00 in (1903) |
| September 9 | 97.0°F (1990) | 42.1°F (2008) | 4.33 in (1903) |
| September 10 | 95.0°F (1999) | 45.0°F (1995) | 4.18 in (2014) |
| September 11 | 97.0°F (2000) | 46.9°F (1997) | 4.33 in (1928) |
| September 12 | 95.0°F (1999) | 45.0°F (1989) | 3.12 in (1928) |
| September 13 | 93.9°F (1991) | 44.1°F (1989) | 4.25 in (2008) |
| September 14 | 91.0°F (1991) | 39.9°F (1993) | 2.63 in (1972) |
| September 15 | 89.1°F (2017) | 37.0°F (2007) | 1.67 in (1926) |
| September 16 | 90.0°F (2018) | 37.9°F (2011) | 2.80 in (1965) |
| September 17 | 90.0°F (1997) | 43.0°F (1993) | 3.00 in (1935) |
| September 18 | 91.9°F (2018) | 41.0°F (2012) | 1.44 in (2001) |
| September 19 | 91.9°F (2018) | 33.1°F (1991) | 1.40 in (2003) |
| September 20 | 95.0°F (2022) | 34.0°F (1991) | 2.42 in (1950) |
| September 21 | 97.0°F (2022) | 37.9°F (1999) | 3.59 in (1947) |
| September 22 | 90.0°F (2016) | 33.1°F (1995) | 3.77 in (1993) |
| September 23 | 90.0°F (2017) | 33.1°F (1995) | 2.66 in (1959) |
| September 24 | 91.9°F (2017) | 32.0°F (1989) | 1.89 in (1900) |
| September 25 | 90.0°F (2017) | 37.0°F (2001) | 1.30 in (1931) |
| September 26 | 88.0°F (2017) | 39.0°F (1989) | 1.73 in (1972) |
| September 27 | 90.0°F (2021) | 37.0°F (1989) | 2.41 in (1999) |
| September 28 | 90.0°F (2021) | 37.0°F (1989) | 1.73 in (1945) |
| September 29 | 90.0°F (2021) | 34.0°F (1992) | 3.01 in (1893) |
| September 30 | 84.9°F (1989) | 37.0°F (1992) | 2.35 in (1962) |