Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

26°F

-3°C

Humidity 81%
Wind Speed S 6 mph
Barometer 30.34 in (1027.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 1 Dec 10:53 am CST
Extended Forecast for

Smithton IL

Winter Weather Advisory December 1, 12:00pm until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Today

    Today: Snow likely, mainly after 5pm.  Cloudy, with a high near 28. Light and variable wind.  Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.

    High: 28 °F

    Snow Likely

  • Tonight

    Tonight: Snow, mainly before midnight.  Low around 20. Calm wind becoming northwest 5 to 7 mph in the evening.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Snow then
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 29. Northwest wind 5 to 7 mph becoming calm  in the afternoon.

    High: 29 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. Calm wind becoming south around 6 mph after midnight.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. South wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow after midnight.  Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday

    Friday: A chance of snow before noon, then a chance of rain and snow.  Mostly cloudy, with a high near 35. Chance of precipitation is 30%.

    High: 35 °F

    Chance Snow
    then Chance
    Rain/Snow

Detailed Forecast

Today
Snow likely, mainly after 5pm. Cloudy, with a high near 28. Light and variable wind. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before midnight. Low around 20. Calm wind becoming northwest 5 to 7 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 29. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 20. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 41. South wind 5 to 7 mph becoming light and variable in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 24.
Thursday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 15.
Friday
A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Mostly cloudy, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
11:26 am CST Dec 1, 2025
11am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
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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