Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
45°F
7°C
| Humidity | 90% |
| Wind Speed | Calm |
| Barometer | 30.37 in (1028.6 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 8:53 pm CDT |
Extended Forecast for
Madison IL
Tonight
Low: 42 °F
Clear
Monday
High: 73 °F
Patchy Fog
then SunnyMonday Night
Low: 44 °F
Increasing
CloudsTuesday
High: 76 °F
Mostly Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 78 °F
Sunny
Wednesday Night
Low: 49 °F
Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 51 °F
Clear
Detailed Forecast
Tonight
Clear, with a low around 42. Southeast wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 73. Light southeast wind.
Monday Night
Increasing clouds, with a low around 44. Light and variable wind.
Tuesday
Mostly sunny, with a high near 76. Calm wind.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Clear, with a low around 49.
Thursday
Sunny, with a high near 78.
Thursday Night
Clear, with a low around 51.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 50.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 81.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Madison IL
38.68°N 90.14°W (Elev. 407 ft)
38.68°N 90.14°W (Elev. 407 ft)
8:21 pm CDT Oct 18, 2026
9pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
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