Glen Carbon Weather Forecast
- 43
- 73
Sunny
- 56
- 75
Partly Sunny
- 53
- 79
Partly Sunny
- 60
- 81
Partly Sunny
- 60
- 79
Partly Sunny
- 58
- 81
Mostly Sunny
Today 9 Oct Madison
Sunny. Highs in the lower 70s. East Winds around 5 Mph.
Tonight 9 Oct Madison
Clear. Lows in the lower 40s. Southeast Winds around 5 Mph.
Glen Carbon Temperature Statistics
October Temperature
St. Louis Regional Airport (9.9 miles)
Lowest 5 October, 2025
53.2 °FAverage October
67.1 °FHighest 1 October, 2025
87.8 °F
Climate (2020–Present)
St. Louis Regional Airport (9.9 miles)
Average Low 2020–2025
46.2 °FAverage 2020–2025
54 °FAverage High 2020–2025
66.1 °F