St. Louis Weather Forecast
- 49
- 75
Mostly Sunny
- 50
- 77
Sunny
- 49
- 76
Mostly Sunny
- 52
- 77
Partly Sunny
- 52
- 78
Mostly Cloudy
- 52
- 75
Mostly Cloudy
Today 21 Oct St. Louis City
Sunny. Near steady temperature in the mid 70s. Light and variable Winds.
Tonight 21 Oct St. Louis City
Mostly clear. Lows in the upper 40s. Light and variable Winds.
St. Louis Temperature Statistics
October Temperature
St. Louis Downtown Airport (5 miles)
Lowest 18 October, 2026
36 °FAverage October
65.3 °FHighest 13 October, 2026
94.6 °F
Climate (2021–2026)
St. Louis Downtown Airport (5 miles)
Average Low 2021–2026
47.8 °FAverage 2021–2026
58.7 °FAverage High 2021–2026
69.5 °F