September weather in St. Elizabeth, MO
The average temperature in St. Elizabeth in September is 68.3°F (56.7°F–79.8°F). Average precipitation: 3.86 inches.
September is a fall month in St. Elizabeth, and is warmer than the annual average of 55.5°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
79.8°F
Avg Low
56.7°F
Precipitation
3.86 in
Daylight
12h 14m
September records in St. Elizabeth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (2021) | 51.1°F (2023) | 2.75 in (1981) |
| September 2 | 90.0°F (2018) | 51.1°F (2017) | 1.82 in (2010) |
| September 3 | 88.0°F (2023) | 51.1°F (2017) | 1.80 in (2010) |
| September 4 | 91.9°F (2023) | 51.1°F (2024) | 3.46 in (2008) |
| September 5 | 93.9°F (2023) | 53.1°F (2024) | 1.32 in (1994) |
| September 6 | 90.0°F (2016) | 48.0°F (2017) | 0.55 in (2023) |
| September 7 | 91.9°F (2016) | 46.0°F (2017) | 0.68 in (1983) |
| September 8 | 91.9°F (2016) | 43.0°F (2024) | 2.94 in (2018) |
| September 9 | 87.1°F (2020) | 43.0°F (2024) | 3.05 in (1984) |
| September 10 | 93.0°F (2019) | 45.0°F (2024) | 2.44 in (1992) |
| September 11 | 88.0°F (2021) | 48.0°F (2017) | 1.11 in (2006) |
| September 12 | 91.9°F (2025) | 48.9°F (2017) | 0.96 in (2000) |
| September 13 | 96.1°F (2025) | 48.0°F (2023) | 0.44 in (1983) |
| September 14 | 97.0°F (2025) | 48.9°F (2023) | 3.85 in (2008) |
| September 15 | 95.0°F (2025) | 48.0°F (2023) | 1.02 in (2011) |
| September 16 | 93.0°F (2019) | 50.0°F (2023) | 1.22 in (2010) |
| September 17 | 93.9°F (2019) | 55.0°F (2023) | 2.23 in (2016) |
| September 18 | 93.9°F (2025) | 48.9°F (2023) | 0.91 in (2005) |
| September 19 | 93.9°F (2019) | 46.0°F (2020) | 2.83 in (1988) |
| September 20 | 96.1°F (2022) | 45.0°F (2020) | 2.42 in (1990) |
| September 21 | 96.1°F (2022) | 45.0°F (2020) | 1.00 in (2001) |
| September 22 | 93.9°F (2022) | 46.9°F (2020) | 1.84 in (2009) |
| September 23 | 93.0°F (2017) | 46.9°F (2021) | 1.58 in (1993) |
| September 24 | 93.0°F (2017) | 46.0°F (2021) | 2.78 in (1996) |
| September 25 | 91.9°F (2017) | 51.1°F (2021) | 2.86 in (1998) |
| September 26 | 89.1°F (2017) | 48.9°F (2022) | 3.26 in (2007) |
| September 27 | 90.0°F (2021) | 44.1°F (2022) | 1.28 in (1992) |
| September 28 | 91.0°F (2019) | 45.0°F (2018) | 0.94 in (2020) |
| September 29 | 89.1°F (2021) | 44.1°F (2022) | 2.68 in (2019) |
| September 30 | 90.0°F (2023) | 39.9°F (2022) | 1.90 in (1986) |