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

24°F

-4°C

Humidity 52%
Wind Speed NW 17 G 24 mph
Barometer 30.12 in (1020.3 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 15 Jan 12:53 am CST
Extended Forecast for

4 Miles WSW Smithton IL

  • Overnight

    Overnight: Clear, with a low around 17. Northwest wind 7 to 9 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 35. Northwest wind around 6 mph becoming south in the afternoon.

    High: 35 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of snow between 11pm and midnight. Mostly cloudy, with a low around 27. South wind 5 to 9 mph becoming west after midnight. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 45. West wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of sprinkles before 8pm, then a chance of flurries between 8pm and midnight, then a slight chance of snow showers after midnight. Mostly cloudy, with a low around 21. West wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 21 °F

    Chance
    Sprinkles/Flurries
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 17. Northwest wind 7 to 9 mph.
Thursday
Sunny, with a high near 35. Northwest wind around 6 mph becoming south in the afternoon.
Thursday Night
A slight chance of snow between 11pm and midnight. Mostly cloudy, with a low around 27. South wind 5 to 9 mph becoming west after midnight. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 45. West wind 10 to 16 mph, with gusts as high as 25 mph.
Friday Night
A chance of sprinkles before 8pm, then a chance of flurries between 8pm and midnight, then a slight chance of snow showers after midnight. Mostly cloudy, with a low around 21. West wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 15.
M.L.King Day
Mostly sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 33.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Sunny, with a high near 43.
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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:
12:21 am CST Jan 15, 2026
Forecast Valid:
1am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation