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

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

31°F

-1°C

Humidity 79%
Wind Speed Calm
Barometer 30.10 in (1019.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Jan 9:54 pm CST
Extended Forecast for

4 Miles E Silex MO

  • Tonight

    Tonight: Mostly clear, with a low around 38. Light south wind becoming southwest 5 to 9 mph after midnight. Winds could gust as high as 23 mph.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. West wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 33. West wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 33 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature rising to near 38 by 11am, then falling to around 31 during the remainder of the day. Northwest wind 15 to 17 mph, with gusts as high as 36 mph.

    High: 38 °F⇓

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. North wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

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

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Light south wind becoming southwest 5 to 9 mph after midnight. Winds could gust as high as 23 mph.
Tuesday
Increasing clouds, with a high near 57. West wind 8 to 14 mph, with gusts as high as 26 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 33. West wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature rising to near 38 by 11am, then falling to around 31 during the remainder of the day. Northwest wind 15 to 17 mph, with gusts as high as 36 mph.
Wednesday Night
Mostly clear, with a low around 15. North wind 7 to 13 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 40.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Silex MO
 39.13°N 90.98°W (Elev. 738 ft)
Last Update:
9:41 pm CST Jan 12, 2026
Forecast Valid:
10pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
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Additional Resources

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