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

47°F

8°C

Humidity 80%
Wind Speed Calm
Barometer 29.88 in (1011.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 8 Nov 7:53 am CST
Extended Forecast for

Smithton IL

  • Today

    Today: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 68. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 68 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 8pm. Mostly cloudy, with a low around 36. Southeast wind 6 to 11 mph becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 29 mph.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: A chance of sprinkles and flurries before 5pm, then a chance of flurries. Mostly cloudy, then gradually becoming sunny, with a high near 41. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 29 mph.

    High: 41 °F

    Chance
    Sprinkles/Flurries
    and Breezy

  • Sunday Night

    Sunday Night: A chance of flurries before midnight. Mostly clear, with a low around 25. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 40. Northwest wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 68. Calm wind becoming southeast around 6 mph in the afternoon.
Tonight
A 30 percent chance of rain, mainly before 8pm. Mostly cloudy, with a low around 36. Southeast wind 6 to 11 mph becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 29 mph.
Sunday
A chance of sprinkles and flurries before 5pm, then a chance of flurries. Mostly cloudy, then gradually becoming sunny, with a high near 41. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 29 mph.
Sunday Night
A chance of flurries before midnight. Mostly clear, with a low around 25. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 40. Northwest wind 8 to 15 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 25.
Veterans Day
Partly sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 68.
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:
5:26 am CST Nov 8, 2025
Forecast Valid:
8am CST Nov 8, 2025-6pm CST Nov 14, 2025
 
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