National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

37°F

3°C

Humidity 76%
Wind Speed NW 9 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 6 Feb 9:53 pm CST
Extended Forecast for

4 Miles WSW Smithton IL

  • Tonight

    Tonight: Mostly clear, with a low around 23. West wind around 6 mph becoming northeast after midnight.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 37. Northeast wind around 6 mph becoming southeast in the afternoon.

    High: 37 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. Southeast wind 6 to 8 mph.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47. Southeast wind 7 to 9 mph.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30. Southeast wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 67.

    High: 67 °F

    Partly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 23. West wind around 6 mph becoming northeast after midnight.
Saturday
Sunny, with a high near 37. Northeast wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 25. Southeast wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 47. Southeast wind 7 to 9 mph.
Sunday Night
Mostly clear, with a low around 30. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 67.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 51.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
9:26 pm CST Feb 6, 2026
Forecast Valid:
10pm CST Feb 6, 2026-6pm CST Feb 13, 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