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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

33°F

1°C

Humidity 72%
Wind Speed Calm
Barometer 30.31 in (1026.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 11 Feb 7:53 pm CST
Extended Forecast for

Madison IL

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Calm wind.

    Low: 31 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 53. Calm wind becoming south around 6 mph in the afternoon.

    High: 53 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Southeast wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 58. Calm wind becoming south around 6 mph in the morning.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Light south wind.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of rain. Cloudy, with a high near 54.

    High: 54 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

    Low: 43 °F

    Rain Likely

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 31. Calm wind.
Thursday
Mostly cloudy, with a high near 53. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 32. Southeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 58. Calm wind becoming south around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 37. Light south wind.
Saturday
A 50 percent chance of rain. Cloudy, with a high near 54.
Saturday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Sunday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 37.
Washington's Birthday
Mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A 20 percent chance of rain. Mostly sunny, with a high near 69.
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:
8:02 pm CST Feb 11, 2026
Forecast Valid:
8pm CST Feb 11, 2026-6pm CST Feb 18, 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