Caseyville Weather Forecast
- 44
- 75
Sunny
- 43
- 74
Sunny
- 56
- 76
Partly Sunny
- 55
- 79
Mostly Sunny
- 60
- 82
Partly Sunny
- 60
- 80
Partly Sunny
- 58
- 81
Mostly Sunny
Today 8 Oct St. Clair
Sunny. Highs in the mid 70s. Northeast Winds 5 to 10 Mph.
Tonight 8 Oct St. Clair
Clear. Lows in the mid 40s. Northeast Winds around 5 Mph.
Caseyville Temperature Statistics
October Temperature
St. Louis Downtown Airport (8.1 miles)
Lowest 5 October, 2025
55 °FAverage October
72 °FHighest 3 October, 2025
90 °F
Climate (2020–Present)
St. Louis Downtown Airport (8.1 miles)
Average Low 2020–2025
47.4 °FAverage 2020–2025
58 °FAverage High 2020–2025
68.6 °F