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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

38°F

3°C

Humidity 43%
Wind Speed S 13 G 23 mph
Barometer 29.88 in (1012.3 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 24 Feb 10:53 am CST
Extended Forecast for

Madison IL

  • Today

    Today: Mostly cloudy, with a high near 55. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 31 mph.

    High: 55 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 54. Calm wind becoming north around 5 mph.

    High: 54 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 36. East wind 3 to 6 mph.

    Low: 36 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 53. East wind around 6 mph becoming north in the afternoon.

    High: 53 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 55. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, with a low around 37. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Partly sunny, with a high near 54. Calm wind becoming north around 5 mph.
Wednesday Night
A 50 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 36. East wind 3 to 6 mph.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 53. East wind around 6 mph becoming north in the afternoon.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
A chance of rain and snow. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Madison IL
 38.68°N 90.14°W (Elev. 407 ft)
Last Update:
10:46 am CST Feb 24, 2026
Forecast Valid:
11am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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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