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.

Fair

72°F

22°C

Humidity 44%
Wind Speed S 10 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 25 Mar 7:53 pm CDT
Extended Forecast for

Smithton IL

  • Tonight

    Tonight: Mostly clear, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 44. South wind 11 to 16 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    Low: 44 °F

    Chance
    T-storms then
    Rain

  • Friday

    Friday: A chance of rain and thunderstorms before 7am, then a chance of rain between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 89. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Thursday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 44. South wind 11 to 16 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
A chance of rain and thunderstorms before 7am, then a chance of rain between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 31. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
A 20 percent chance of rain and thunderstorms before 1pm. Mostly sunny, with a high near 78.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 60.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 80.
Tuesday Night
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
6:16 pm CDT Mar 25, 2026
Forecast Valid:
8pm CDT Mar 25, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation