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

Winter Weather Advisory March 1, 06:00pm until March 2, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Rain and snow, possibly mixed with sleet before 4am, then a chance of rain. Low around 35. East wind 8 to 10 mph. Chance of precipitation is 100%. Total nighttime snow and sleet accumulation of less than a half inch possible.

    Low: 35 °F

    Wintry Mix

  • Monday

    Monday: A 50 percent chance of rain, mainly before 8am. Cloudy, with a high near 47. East wind 6 to 9 mph.

    High: 47 °F

    Chance Rain
    then Cloudy

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 40. East wind 3 to 6 mph. Chance of precipitation is 70%.

    Low: 40 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday

    Tuesday: Rain. High near 66. South wind 6 to 8 mph. Chance of precipitation is 80%.

    High: 66 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 70%.

    Low: 55 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 71. Chance of precipitation is 80%.

    High: 71 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm before midnight, then rain likely. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before noon. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.

    High: 73 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain and thunderstorms. Partly cloudy, with a low around 59.

    Low: 59 °F

    Chance Rain
    then Chance
    T-storms

Detailed Forecast

Tonight
Rain and snow, possibly mixed with sleet before 4am, then a chance of rain. Low around 35. East wind 8 to 10 mph. Chance of precipitation is 100%. Total nighttime snow and sleet accumulation of less than a half inch possible.
Monday
A 50 percent chance of rain, mainly before 8am. Cloudy, with a high near 47. East wind 6 to 9 mph.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 40. East wind 3 to 6 mph. Chance of precipitation is 70%.
Tuesday
Rain. High near 66. South wind 6 to 8 mph. Chance of precipitation is 80%.
Tuesday Night
Rain likely, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 70%.
Wednesday
Rain and possibly a thunderstorm. High near 71. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm before midnight, then rain likely. Low around 54. Chance of precipitation is 80%.
Thursday
Rain likely, mainly before noon. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Partly cloudy, with a low around 59.
Friday
Rain likely and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of rain. Partly cloudy, with a low around 43.
Sunday
A 30 percent chance of rain. Mostly sunny, with a high near 69.
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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:
4:41 pm CST Mar 1, 2026
Forecast Valid:
4pm CST Mar 1, 2026-6pm CDT Mar 8, 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