National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

49°F

9°C

Humidity 93%
Wind Speed S 7 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 24 Nov 9:53 am CST
Extended Forecast for

Madison IL

  • Today

    Today: Scattered showers, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 52. Southeast wind around 8 mph. Chance of precipitation is 50%.

    High: 52 °F

    Patchy Fog
    then
    Scattered
    Showers

  • Tonight

    Tonight: Showers, mainly before 3am. Patchy fog after 8pm. Low around 52. Southeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 100%.

    Low: 52 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west 5 to 8 mph in the morning.

    High: 58 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. West wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. West wind 13 to 17 mph, with gusts as high as 29 mph.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Today
Scattered showers, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 52. Southeast wind around 8 mph. Chance of precipitation is 50%.
Tonight
Showers, mainly before 3am. Patchy fog after 8pm. Low around 52. Southeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 100%.
Tuesday
A 20 percent chance of showers after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west 5 to 8 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 36. West wind 7 to 15 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 46. West wind 13 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 29.
Thanksgiving Day
Sunny, with a high near 44.
Thursday Night
Mostly clear, with a low around 24.
Friday
Mostly sunny, with a high near 41.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Saturday
Rain and snow likely. Cloudy, with a high near 42. Chance of precipitation is 70%.
Saturday Night
Rain likely. Cloudy, with a low around 38. Chance of precipitation is 60%.
Sunday
A 50 percent chance of rain. Cloudy, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Madison IL
 38.68°N 90.14°W (Elev. 407 ft)
Last Update:
8:46 am CST Nov 24, 2025
Forecast Valid:
10am CST Nov 24, 2025-6pm CST Nov 30, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation