National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

32°F

0°C

Humidity 52%
Wind Speed N 3 mph
Barometer 30.50 in (1033.1 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 28 Nov 10:53 am CST
Extended Forecast for

Smithton IL

Winter Weather Advisory November 29, 12:00am until November 30, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Increasing clouds, with a high near 39. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 39 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow, mainly after 3am. Low around 30. Southeast wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Cloudy then
    Snow

  • Saturday

    Saturday: Rain and snow, possibly mixed with sleet before 3pm, then rain, possibly mixed with snow between 3pm and 4pm, then rain after 4pm. High near 38. Southeast wind 11 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

    High: 38 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Rain likely, possibly mixing with snow after 10pm, then gradually ending. Cloudy, with a low around 25. South wind 15 to 18 mph becoming northwest after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 25 °F

    Rain/Snow
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 30. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 30 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 39. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
Snow, mainly after 3am. Low around 30. Southeast wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Rain and snow, possibly mixed with sleet before 3pm, then rain, possibly mixed with snow between 3pm and 4pm, then rain after 4pm. High near 38. Southeast wind 11 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Saturday Night
Rain likely, possibly mixing with snow after 10pm, then gradually ending. Cloudy, with a low around 25. South wind 15 to 18 mph becoming northwest after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday
Mostly cloudy, with a high near 30. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly cloudy, with a high near 29.
Monday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.44°N 89.99°W (Elev. 449 ft)
Last Update:
11:06 am CST Nov 28, 2025
Forecast Valid:
11am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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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