Downtown (St. Louis) Weather Forecast
- 50
- 75
Sunny
- 53
- 79
Mostly Sunny
- 59
- 83
Mostly Sunny
- 64
- 90
Mostly Sunny
- 67
- 92
Mostly Sunny
- 68
- 94
Mostly Sunny
Today 7 Sep St. Louis City
Sunny. Highs in the mid 70s. North Winds 5 to 10 Mph.
Tonight 7 Sep St. Louis City
Clear. Lows in the upper 40s. East Winds around 5 Mph.
Downtown (St. Louis) Temperature Statistics
September Temperature
St. Louis Downtown Airport (4.3 miles)
Lowest 3 September, 2025
55.9 °FAverage September
68.9 °FHighest 3 September, 2025
87.1 °F
Climate (2020–Present)
St. Louis Downtown Airport (4.3 miles)
Average Low 2020–2025
47.3 °FAverage 2020–2025
57.8 °FAverage High 2020–2025
68.5 °F