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.

Partly Cloudy

30°C

86°F

Humidity 63%
Wind Speed E 11 km/h
Barometer 1016.4 mb (30.03 in)
Dewpoint 22°C (72°F)
Visibility 16 km
Heat Index33°C (92°F)
Last update 14 Jul 3:53 pm CDT
Extended Forecast for

Madison IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Cloudy, with a high near 29. Calm wind.

    High: 29 °C

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °C

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.

    High: 31 °C

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. South wind 3 to 8 km/h.

    Low: 23 °C

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 35. Light southwest wind increasing to 6 to 11 km/h in the morning.

    High: 35 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 25.

    Low: 25 °C

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 35.

    High: 35 °C

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 23.

    Low: 23 °C

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 32.

    High: 32 °C

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Cloudy, with a high near 29. Calm wind.
Tonight
Mostly cloudy, with a low around 22. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.
Tuesday Night
Partly cloudy, with a low around 23. South wind 3 to 8 km/h.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 35. Light southwest wind increasing to 6 to 11 km/h in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 25.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 35.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 23.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 32.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 24.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 35.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 24.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 36.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 24.
Monday
A 20 percent chance of showers and thunderstorms. 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 m)
Last Update:
4:21 pm CDT Jul 14, 2025
Forecast Valid:
4pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025
 
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Additional Resources

Radar & Satellite Image

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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