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

28°F

-2°C

Humidity 66%
Wind Speed S 6 mph
Barometer 30.37 in (1028.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 12 Jan 1:54 am CST
Extended Forecast for

4 Miles SE Silex MO

  • Overnight

    Overnight: Clear, with a low around 24. Southwest wind around 6 mph.

    Low: 24 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 50. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Southwest wind 5 to 8 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36. West wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 40 by 10am, then falling to around 33 during the remainder of the day.

    High: 40 °F⇓

    Mostly Cloudy

  • Wednesday Night

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

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 24. Southwest wind around 6 mph.
Monday
Sunny, with a high near 50. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 36. Southwest wind 5 to 8 mph.
Tuesday
Partly sunny, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36. West wind 6 to 10 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 40 by 10am, then falling to around 33 during the remainder of the day.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Mostly cloudy, with a high near 30.
Saturday Night
Partly cloudy, with a low around 13.
Sunday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Silex MO
 39.08°N 91.01°W (Elev. 482 ft)
Last Update:
12:31 am CST Jan 12, 2026
Forecast Valid:
2am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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