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

69°F

21°C

Humidity 59%
Wind Speed S 17 G 35 mph
Barometer 29.42 in (996.1 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Mar 12:53 pm CDT
Extended Forecast for

Madison IL

Wind Advisory until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • This Afternoon

    High: 69 °F

    T-storms and
    Breezy

  • Tonight

    Tonight: Rain before 10pm, then a slight chance of rain and snow between 10pm and 1am, then a chance of snow after 1am. Low around 23. Breezy, with a west wind around 23 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Breezy.
    Rain/Snow
    then Chance
    Rain/Snow

  • Monday

    Monday: A slight chance of snow before noon, then a chance of flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 21 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.

    High: 29 °F

    Blustery.
    Slight Chance
    Snow then
    Chance
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. Northwest wind around 6 mph becoming southwest in the afternoon.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of rain before 7am. Partly sunny, with a high near 65.

    High: 65 °F

    Chance Rain
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms between 3pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 69. Breezy, with a south wind 21 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Tonight
Rain before 10pm, then a slight chance of rain and snow between 10pm and 1am, then a chance of snow after 1am. Low around 23. Breezy, with a west wind around 23 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A slight chance of snow before noon, then a chance of flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 21 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 15. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 38. Northwest wind around 6 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of rain before 7am. Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 46.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
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:
1:21 pm CDT Mar 15, 2026
Forecast Valid:
1pm CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation