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

45°F

7°C

Humidity 48%
Wind Speed S 5 mph
Barometer 29.97 in (1015.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Jan 3:53 am CST
Extended Forecast for

Madison IL

  • Today

    Today: Increasing clouds, with a high near 65. West wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 65 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 37. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 34 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 40 °F⇓

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 18. North wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 34. Northwest wind around 6 mph becoming south in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Snow

  • Friday

    Friday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 22. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 65. West wind 8 to 14 mph, with gusts as high as 26 mph.
Tonight
A 50 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 37. West wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a temperature falling to around 34 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 18. North wind 7 to 14 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 34. Northwest wind around 6 mph becoming south in the afternoon.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 45.
Friday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 22. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Mostly clear, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Madison IL
 38.68°N 90.14°W (Elev. 407 ft)
Last Update:
4:31 am CST Jan 13, 2026
Forecast Valid:
4am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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