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.

Overcast

24°F

-4°C

Humidity 57%
Wind Speed W 13 G 23 mph
Barometer 30.19 in (1023.0 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 17 Jan 2:53 pm CST
Extended Forecast for

4 Miles WSW Smithton IL

  • This Afternoon

    This Afternoon: A chance of flurries. Mostly cloudy, with a high near 26. West wind 14 to 16 mph, with gusts as high as 24 mph.

    High: 26 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 12. West wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 12 °F

    Chance
    Flurries

  • Sunday

    Sunday: A chance of flurries after 10am. Increasing clouds, with a high near 33. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 33 °F

    Chance
    Flurries

  • Sunday Night

    Sunday Night: A chance of flurries before 9pm. Partly cloudy, with a low around 13. Southwest wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 13 °F

    Chance
    Flurries

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 22. Northwest wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 22 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of flurries. Mostly cloudy, with a high near 26. West wind 14 to 16 mph, with gusts as high as 24 mph.
Tonight
A chance of flurries before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 12. West wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday
A chance of flurries after 10am. Increasing clouds, with a high near 33. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday Night
A chance of flurries before 9pm. Partly cloudy, with a low around 13. Southwest wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
M.L.King Day
Mostly sunny, with a high near 22. Northwest wind 6 to 15 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 38.
Tuesday Night
Partly cloudy, with a low around 28.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 21.
Thursday
Sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 45.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
3:16 pm CST Jan 17, 2026
Forecast Valid:
3pm CST Jan 17, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation