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

30°F

-1°C

Humidity 34%
Wind Speed S 8 mph
Barometer 30.00 in (1016.5 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 15 Jan 1:53 pm CST
Extended Forecast for

5 Miles SW Smithton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 34. West wind 5 to 7 mph becoming south.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before midnight. Increasing clouds, with a temperature rising to around 33 by 4am. South wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 28 °F⇑

    Chance Snow

  • Friday

    Friday: Scattered sprinkles between 4pm and 5pm, then isolated showers after 5pm. Mostly cloudy, with a high near 45. West wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Scattered rain showers before 7pm, then scattered snow showers. Mostly cloudy, with a low around 21. Northwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Scattered
    Rain/Snow
    then Isolated
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 27. West wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 27 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

  • Sunday Night

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

    Low: 15 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 34. West wind 5 to 7 mph becoming south.
Tonight
A 30 percent chance of snow, mainly before midnight. Increasing clouds, with a temperature rising to around 33 by 4am. South wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Friday
Scattered sprinkles between 4pm and 5pm, then isolated showers after 5pm. Mostly cloudy, with a high near 45. West wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Scattered rain showers before 7pm, then scattered snow showers. Mostly cloudy, with a low around 21. Northwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 27. West wind 11 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 15.
M.L.King Day
Mostly sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Mostly sunny, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
11:21 am CST Jan 15, 2026
Forecast Valid:
2pm CST Jan 15, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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