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

72°F

22°C

Humidity 68%
Wind Speed S 13 G 23 mph
Barometer 29.80 in (1008.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 2 Apr 9:53 pm CDT
Extended Forecast for

Madison IL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 61 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly before 4pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 14 mph becoming south in the morning. Winds could gust as high as 23 mph.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 56. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 56 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers, mainly before 1pm. High near 65. West wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Northwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Friday
A 50 percent chance of showers and thunderstorms, mainly before 4pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 14 mph becoming south in the morning. Winds could gust as high as 23 mph.
Friday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 56. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Saturday
Showers, mainly before 1pm. High near 65. West wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 41. Northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Clear, with a low around 41.
Monday
Sunny, with a high near 64.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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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:
10:21 pm CDT Apr 2, 2026
Forecast Valid:
10pm CDT Apr 2, 2026-6pm CDT Apr 9, 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