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.

A Few Clouds with Haze

69°F

21°C

Humidity 81%
Wind Speed NE 6 mph
Barometer 30.20 in (1022.3 mb)
Dewpoint 63°F (17°C)
Visibility 5.00 mi
Last update 1 Aug 2:53 am CDT
Extended Forecast for

Madison IL

  • Overnight

    Overnight: Areas of smoke. Partly cloudy, with a low around 62. Northeast wind around 7 mph.

    Low: 62 °F

    Areas Smoke

  • Friday

    Friday: Areas of smoke before 8am. Mostly sunny, with a high near 82. Northeast wind 6 to 11 mph.

    High: 82 °F

    Areas Smoke
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Northeast wind 5 to 9 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Northeast wind 5 to 9 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Northeast wind around 6 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Areas of smoke. Partly cloudy, with a low around 62. Northeast wind around 7 mph.
Friday
Areas of smoke before 8am. Mostly sunny, with a high near 82. Northeast wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 61. Northeast wind 5 to 9 mph.
Saturday
Sunny, with a high near 82. Northeast wind 5 to 9 mph.
Saturday Night
Mostly clear, with a low around 61. Northeast wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Sunny, with a high near 90.
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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:
2:21 am CDT Aug 1, 2025
Forecast Valid:
3am CDT Aug 1, 2025-6pm CDT Aug 7, 2025
 
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