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

27°F

-3°C

Humidity 63%
Wind Speed Calm
Barometer 30.17 in (1022.1 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 2 Feb 4:53 am CST
Extended Forecast for

Smithton IL

  • Today

    Today: Partly sunny, with a high near 38. Southwest wind around 5 mph becoming calm in the afternoon.

    High: 38 °F

    Partly Sunny

  • Tonight

    Tonight: Cloudy, with a low around 28. Southeast wind 3 to 6 mph.

    Low: 28 °F

    Cloudy

  • Tuesday

    Tuesday: A chance of snow and freezing rain before 1pm, then a slight chance of rain and snow between 1pm and 2pm, then a slight chance of snow after 2pm. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 34 °F

    Chance Snow
    then Slight
    Chance Wintry
    Mix

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 17. North wind around 6 mph becoming calm in the evening.

    Low: 17 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. Calm wind becoming north around 6 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 38. Southwest wind around 5 mph becoming calm in the afternoon.
Tonight
Cloudy, with a low around 28. Southeast wind 3 to 6 mph.
Tuesday
A chance of snow and freezing rain before 1pm, then a slight chance of rain and snow between 1pm and 2pm, then a slight chance of snow after 2pm. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 9 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 17. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 30. Calm wind becoming north around 6 mph.
Wednesday Night
Partly cloudy, with a low around 14.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Mostly clear, with a low around 31.
Friday
Mostly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 43.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
4:46 am CST Feb 2, 2026
Forecast Valid:
6am CST Feb 2, 2026-6pm CST Feb 8, 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