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

28°F

-2°C

Humidity 63%
Wind Speed SE 9 mph
Barometer 30.29 in (1026.0 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 7 Feb 10:53 pm CST
Extended Forecast for

Madison IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Southeast wind 7 to 9 mph.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 46. Southeast wind 8 to 10 mph.

    High: 46 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. East wind around 6 mph becoming calm after midnight.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Southeast wind around 6 mph becoming southwest after midnight.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Southeast wind 7 to 9 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 46. Southeast wind 8 to 10 mph.
Sunday Night
Partly cloudy, with a low around 29. East wind around 6 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 41. Southeast wind around 6 mph becoming southwest after midnight.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
A 30 percent chance of rain, mainly after noon. Cloudy, with a high near 48.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 49.
Friday Night
A chance of rain and snow. Partly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 47. Chance of precipitation is 30%.
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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:
10:06 pm CST Feb 7, 2026
Forecast Valid:
11pm CST Feb 7, 2026-6pm CST Feb 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation