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 51%
Wind Speed NW 15 G 23 mph
Barometer 30.30 in (1026.4 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Jan 2:53 am CST
Extended Forecast for

4 Miles SW Smithton IL

  • Overnight

    Overnight: A chance of flurries before 5am. Mostly clear, with a low around 26. Northwest wind around 16 mph, with gusts as high as 28 mph.

    Low: 26 °F

    Chance
    Flurries

  • Sunday

    Sunday: Sunny, with a high near 39. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53. West wind 5 to 9 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Southwest wind 3 to 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of flurries before 5am. Mostly clear, with a low around 26. Northwest wind around 16 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 39. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph after midnight.
Monday
Sunny, with a high near 53. West wind 5 to 9 mph.
Monday Night
Partly cloudy, with a low around 36. Southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
3:16 am CST Jan 11, 2026
Forecast Valid:
3am CST Jan 11, 2026-6pm CST Jan 17, 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