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

71°F

22°C

Humidity 63%
Wind Speed S 7 mph
Barometer 29.75 in (1007.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Apr 11:53 pm CDT
Extended Forecast for

Madison ILSimilar City Names

Flood Watch April 18, 07:00pm until April 20, 07:00pm
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: Partly cloudy, with a low around 66. South wind around 8 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 85. South wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 85 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 60. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    Low: 60 °F

    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 66. North wind around 7 mph. Chance of precipitation is 90%.

    High: 66 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 56. Northeast wind around 6 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 1pm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. South wind around 8 mph, with gusts as high as 20 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 85. South wind 8 to 15 mph, with gusts as high as 26 mph.
Friday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 60. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm. High near 66. North wind around 7 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm. Low around 56. Northeast wind around 6 mph. Chance of precipitation is 80%.
Sunday
Showers, with thunderstorms also possible after 1pm. High near 73. Chance of precipitation is 80%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Monday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 78.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 77.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Madison ILSimilar City Names
 38.68°N 90.14°W (Elev. 407 ft)
Last Update:
10:21 pm CDT Apr 17, 2025
Forecast Valid:
12am CDT Apr 18, 2025-6pm CDT Apr 24, 2025
 
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