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.

Overcast

65°F

18°C

Humidity 73%
Wind Speed N 3 mph
Barometer 29.95 in (1013.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 3 Apr 3:53 am CDT
Extended Forecast for

Madison IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Partly sunny, with a high near 82. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 24 mph.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 59 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers, mainly before 1pm. Temperature falling to around 57 by 5pm. West wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 64 °F⇓

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Partly sunny, with a high near 82. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 24 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Saturday
Showers, mainly before 1pm. Temperature falling to around 57 by 5pm. West wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 41. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 60. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 53.
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:
4:51 am CDT Apr 3, 2026
Forecast Valid:
6am CDT Apr 3, 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