September weather in Plattsburg, MO
The average temperature in Plattsburg in September is 67.0°F (56.2°F–77.8°F). Average precipitation: 4.30 inches.
September is a fall month in Plattsburg, and is warmer than the annual average of 53°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
77.8°F
Avg Low
56.2°F
Precipitation
4.30 in
Daylight
12h 15m
September records in Plattsburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2000) | 46.9°F (1987) | 3.10 in (2010) |
| September 2 | 100.9°F (1990) | 52.0°F (2009) | 0.32 in (1997) |
| September 3 | 102.0°F (2000) | 55.0°F (2010) | 0.71 in (2008) |
| September 4 | 97.0°F (2000) | 48.9°F (2010) | 1.98 in (2008) |
| September 5 | 96.1°F (1990) | 48.0°F (2008) | 1.23 in (1999) |
| September 6 | 96.1°F (1990) | 43.0°F (2017) | 2.95 in (2004) |
| September 7 | 99.0°F (1990) | 35.1°F (2017) | 0.87 in (2015) |
| September 8 | 95.0°F (2002) | 37.9°F (1986) | 1.37 in (2016) |
| September 9 | 98.1°F (2013) | 34.0°F (2017) | 3.86 in (1989) |
| September 10 | 95.0°F (1991) | 33.1°F (2017) | 0.36 in (2016) |
| September 11 | 96.1°F (2000) | 46.0°F (1997) | 1.97 in (1986) |
| September 12 | 100.9°F (2000) | 44.1°F (1997) | 1.16 in (1995) |
| September 13 | 95.0°F (1991) | 37.0°F (2014) | 2.88 in (2008) |
| September 14 | 93.9°F (2025) | 37.0°F (2014) | 3.62 in (1998) |
| September 15 | 89.1°F (1994) | 36.0°F (1993) | 1.41 in (1987) |
| September 16 | 91.9°F (2025) | 37.0°F (1993) | 1.33 in (2013) |
| September 17 | 93.9°F (1997) | 42.1°F (1999) | 3.52 in (2001) |
| September 18 | 91.0°F (2000) | 42.1°F (1999) | 1.74 in (2004) |
| September 19 | 93.9°F (2022) | 34.0°F (1991) | 2.57 in (2010) |
| September 20 | 97.0°F (2022) | 35.1°F (1991) | 2.60 in (2013) |
| September 21 | 97.0°F (2022) | 35.1°F (1999) | 2.00 in (1985) |
| September 22 | 91.0°F (2016) | 30.0°F (1995) | 3.06 in (1994) |
| September 23 | 93.0°F (2024) | 35.1°F (1995) | 1.71 in (1986) |
| September 24 | 89.1°F (2017) | 28.9°F (1989) | 1.40 in (2010) |
| September 25 | 88.0°F (2017) | 33.1°F (1989) | 1.64 in (1993) |
| September 26 | 93.0°F (1998) | 37.0°F (1990) | 0.90 in (1996) |
| September 27 | 91.0°F (2021) | 35.1°F (1989) | 1.32 in (1986) |
| September 28 | 91.9°F (1990) | 36.0°F (1989) | 2.77 in (1999) |
| September 29 | 88.0°F (2025) | 24.1°F (2020) | 1.81 in (2019) |
| September 30 | 90.0°F (2002) | 37.9°F (2003) | 1.34 in (1985) |