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

86°F

30°C

Humidity 61%
Wind Speed W 3 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 7 Aug 3:53 pm CDT
Extended Forecast for

Smithton IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Mostly cloudy, with a high near 92. South wind around 7 mph. Chance of precipitation is 20%.

    High: 92 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms before 4am, then isolated showers. Partly cloudy, with a low around 72. South wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Scattered
    T-storms

  • Friday

    Friday: Sunny, with a high near 94. Heat index values as high as 100. South wind 5 to 11 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. South wind 6 to 8 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. South wind 6 to 11 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly cloudy, with a high near 92. South wind around 7 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms before 4am, then isolated showers. Partly cloudy, with a low around 72. South wind 5 to 7 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 94. Heat index values as high as 100. South wind 5 to 11 mph.
Friday Night
Mostly clear, with a low around 74. South wind 6 to 8 mph.
Saturday
Sunny, with a high near 94. South wind 6 to 11 mph.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 73.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
4:16 pm CDT Aug 7, 2025
Forecast Valid:
4pm CDT Aug 7, 2025-6pm CDT Aug 14, 2025
 
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