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

Smithton IL

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Areas of fog. Low around 54. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 100%.

    Low: 54 °F

    T-storms and
    Areas Fog
    then Showers
    and Areas Fog

  • Thursday

    Thursday: Showers and thunderstorms likely before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 67. South wind 5 to 8 mph becoming west in the morning. Chance of precipitation is 70%.

    High: 67 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 9 mph in the evening.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Isolated showers. Partly sunny, with a high near 78. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    High: 78 °F

    Isolated
    Showers and
    Breezy

  • Friday Night

    Friday Night: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    Low: 57 °F

    Scattered
    T-storms then
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before noon. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

    High: 67 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Areas of fog. Low around 54. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 100%.
Thursday
Showers and thunderstorms likely before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 67. South wind 5 to 8 mph becoming west in the morning. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 9 mph in the evening.
Friday
Isolated showers. Partly sunny, with a high near 78. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Friday Night
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Saturday
Scattered showers, mainly before noon. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 76.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Wednesday
Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
10:26 pm CST Mar 4, 2026
Forecast Valid:
10pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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