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

31°F

-1°C

Humidity 30%
Wind Speed W 9 mph
Barometer 30.26 in (1025.1 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 28 Jan 2:53 pm CST
Extended Forecast for

5 Miles SW Smithton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 11. Calm wind becoming northeast around 5 mph after midnight.

    Low: 11 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 24. Northeast wind 5 to 8 mph.

    High: 24 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Cloudy, with a low around 7. Northeast wind 3 to 8 mph.

    Low: 7 °F

    Chance Snow

  • Friday

    Friday: Partly sunny and cold, with a high near 19. North wind 5 to 10 mph.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 5. North wind 8 to 10 mph.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 17.

    High: 17 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 11. Calm wind becoming northeast around 5 mph after midnight.
Thursday
Mostly cloudy, with a high near 24. Northeast wind 5 to 8 mph.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Cloudy, with a low around 7. Northeast wind 3 to 8 mph.
Friday
Partly sunny and cold, with a high near 19. North wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 5. North wind 8 to 10 mph.
Saturday
Mostly sunny and cold, with a high near 17.
Saturday Night
Partly cloudy, with a low around 2.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly cloudy, with a high near 37.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
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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:
3:16 pm CST Jan 28, 2026
Forecast Valid:
3pm CST Jan 28, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
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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