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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Madison IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Patchy fog. Low around 38. Light east wind. Chance of precipitation is 100%.

    Low: 38 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Patchy fog before 1pm. High near 58. Southeast wind 3 to 6 mph. Chance of precipitation is 90%.

    High: 58 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Patchy fog after 8pm. Low around 49. Northeast wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 49 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Patchy fog before 9am. High near 65. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 65 °F

    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 55. Southwest wind around 6 mph. Chance of precipitation is 90%.

    Low: 55 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, then showers and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Patchy fog. Low around 38. Light east wind. Chance of precipitation is 100%.
Tuesday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Patchy fog before 1pm. High near 58. Southeast wind 3 to 6 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Patchy fog after 8pm. Low around 49. Northeast wind 5 to 7 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. Patchy fog before 9am. High near 65. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 55. Southwest wind around 6 mph. Chance of precipitation is 90%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.
Friday Night
A chance of showers, then showers and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before noon, then a slight chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 50.
Monday
A 20 percent chance of showers. Sunny, with a high near 74.
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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:
4:46 am CST Mar 3, 2026
Forecast Valid:
5am CST Mar 3, 2026-6pm CDT Mar 9, 2026
 
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