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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Madison IL

  • Today

    Today: A 50 percent chance of rain before 10am. Cloudy, with a temperature falling to around 49 by 5pm. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 64 °F⇓

    Chance Rain
    then Mostly
    Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 39 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 67. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48. South wind around 6 mph.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80. South wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after noon. Partly sunny, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then a chance of rain. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Rain then
    Chance Rain

Detailed Forecast

Today
A 50 percent chance of rain before 10am. Cloudy, with a temperature falling to around 49 by 5pm. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 67. Calm wind becoming southwest 5 to 8 mph in the morning.
Sunday Night
Clear, with a low around 48. South wind around 6 mph.
Monday
Sunny, with a high near 80. South wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 60.
Tuesday
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after noon. Partly sunny, with a high near 80. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 65. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Partly sunny, with a high near 67.
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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:
8:51 am CST Mar 7, 2026
Forecast Valid:
9am CST Mar 7, 2026-6pm CDT Mar 13, 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