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

35°F

2°C

Humidity 42%
Wind Speed SW 7 mph
Barometer 29.70 in (1006.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 16 Jan 5:53 am CST
Extended Forecast for

4 Miles WSW Smithton IL

  • Today

    Today: A chance of rain and snow before 1pm, then a slight chance of rain after 4pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 45. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Tonight

    Tonight: A chance of rain before 8pm, then a chance of snow between 8pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 22. Northwest wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 22 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 29. West wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 29 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 12. Northwest wind 6 to 10 mph.

    Low: 12 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 33 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

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

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

Detailed Forecast

Today
A chance of rain and snow before 1pm, then a slight chance of rain after 4pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 45. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Tonight
A chance of rain before 8pm, then a chance of snow between 8pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 22. Northwest wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 29. West wind 8 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 12. Northwest wind 6 to 10 mph.
Sunday
Mostly sunny, with a high near 33. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 27.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 28.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 42.
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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:
5:01 am CST Jan 16, 2026
Forecast Valid:
6am CST Jan 16, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation