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.

Overcast

56°F

13°C

Humidity 97%
Wind Speed NE 6 mph
Barometer 29.92 in (1013.1 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 1 Apr 8:53 pm CDT
Extended Forecast for

5 Miles SW Smithton IL

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a temperature rising to around 65 by 3am. East wind 7 to 13 mph becoming south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%.

    Low: 60 °F⇑

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind 16 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.

    High: 76 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then showers likely after 2am. Partly cloudy, with a low around 63. South wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. South wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 56 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a steady temperature around 59. Chance of precipitation is 70%.

    High: 59 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a temperature rising to around 65 by 3am. East wind 7 to 13 mph becoming south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind 16 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then showers likely after 2am. Partly cloudy, with a low around 63. South wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. South wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a steady temperature around 59. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 37.
Monday
Sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
7:31 pm CDT Apr 1, 2026
Forecast Valid:
9pm CDT Apr 1, 2026-6pm CDT Apr 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