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.

Fog/Mist

64°F

18°C

Humidity 84%
Wind Speed SW 7 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Dec 12:53 am CST
Extended Forecast for

Madison IL

Dense Fog Advisory December 25, 01:40am until December 25, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 25, 01:40am until December 25, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Overnight

    Low: 53 °F

    Patchy Dense
    Fog

  • Christmas Day

    Christmas Day: Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 66 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. East wind around 6 mph becoming southwest after midnight.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 61. Chance of precipitation is 60%.

    High: 61 °F

    Rain Likely

Detailed Forecast

Overnight
Patchy dense fog after 3am. Otherwise, mostly cloudy, with a low around 53. Light southwest wind.
Christmas Day
Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 58. East wind around 6 mph becoming southwest after midnight.
Friday
Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 46. Light and variable wind.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 61. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 42.
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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:
12:11 am CST Dec 25, 2025
Forecast Valid:
1am CST Dec 25, 2025-6pm CST Dec 31, 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