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

75°F

24°C

Humidity 74%
Wind Speed W 12 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 15 Oct 6:54 pm CDT
Extended Forecast for

Silex MO

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 45. Northwest wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Isolated showers after 3pm. Increasing clouds, with a high near 54. Northwest wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 54 °F

    Partly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 29 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. Calm wind.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 45. Northwest wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Friday
Isolated showers after 3pm. Increasing clouds, with a high near 54. Northwest wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 29 mph.
Saturday
Sunny, with a high near 60. Calm wind.
Saturday Night
Clear, with a low around 36. Calm wind.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 39.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Silex MO
 39.13°N 91.06°W (Elev. 600 ft)
Last Update:
5:41 pm CDT Oct 15, 2026
Forecast Valid:
7pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation