Alton Weather Forecast
- 50
- 76
Mostly Sunny
- 51
- 79
Sunny
- 48
- 75
Sunny
- 51
- 76
Mostly Sunny
- 55
- 82
Sunny
- 57
- 84
Sunny
Today 3 Oct Madison
Sunny. Highs in the mid 70s. East Winds around 5 Mph.
Tonight 3 Oct Madison
Partly cloudy in the Evening, then clearing. Lows around 50. East Winds around 5 Mph in the Evening, becoming light and variable.
Alton Temperature Statistics
October Temperature
St. Louis Regional Airport (8.1 miles)
Lowest
–Average October
–Highest
–
Climate (2021–2026)
St. Louis Regional Airport (8.1 miles)
Average Low 2021–2026
46.6 °FAverage 2021–2026
54.6 °FAverage High 2021–2026
66.6 °F