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

  • This Afternoon

    This Afternoon: A 20 percent chance of rain before 5pm. Mostly sunny, with a high near 81. South wind around 15 mph, with gusts as high as 26 mph.

    High: 81 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Low around 62. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Rain

  • Saturday

    Saturday: Rain and thunderstorms, mainly before 11am. Temperature rising to near 68 by 10am, then falling to around 58 during the remainder of the day. Southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%.

    High: 68 °F⇓

    Rain then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 38 °F

    Partly Cloudy

  • 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 47.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80.

    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

    Rain Likely

Detailed Forecast

This Afternoon
A 20 percent chance of rain before 5pm. Mostly sunny, with a high near 81. South wind around 15 mph, with gusts as high as 26 mph.
Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Low around 62. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Saturday
Rain and thunderstorms, mainly before 11am. Temperature rising to near 68 by 10am, then falling to around 58 during the remainder of the day. Southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Saturday Night
Partly cloudy, with a low around 38. 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 47.
Monday
Sunny, with a high near 80.
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 52. Chance of precipitation is 90%.
Wednesday
Rain. High near 61. Chance of precipitation is 80%.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
Sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 41.
Friday
Mostly sunny, with a high near 68.
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:
2:41 pm CST Mar 6, 2026
Forecast Valid:
3pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
 
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