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.

Fog/Mist

60°F

16°C

Humidity 86%
Wind Speed SE 8 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 56°F (13°C)
Visibility 6.00 mi
Last update 24 Dec 12:53 pm CST
Extended Forecast for

4 Miles SSE Smithton IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 69. South wind around 9 mph.

    High: 69 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 8 mph becoming light and variable after midnight.

    Low: 55 °F

    Partly Cloudy
    then Patchy
    Fog

  • Christmas Day

    Christmas Day: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 69. Light and variable wind becoming northwest around 5 mph in the morning.

    High: 69 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 59. East wind 5 to 7 mph becoming southwest after midnight.

    Low: 59 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 72. West wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Rain Likely

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 69. South wind around 9 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 8 mph becoming light and variable after midnight.
Christmas Day
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 69. Light and variable wind becoming northwest around 5 mph in the morning.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 59. East wind 5 to 7 mph becoming southwest after midnight.
Friday
Sunny, with a high near 72. West wind 5 to 10 mph becoming light and variable in the afternoon.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 62. Chance of precipitation is 60%.
Sunday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 30.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Smithton IL
 38.37°N 89.96°W (Elev. 410 ft)
Last Update:
1:16 pm CST Dec 24, 2025
Forecast Valid:
1pm CST Dec 24, 2025-6pm CST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation