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

38°F

3°C

Humidity 70%
Wind Speed E 7 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 14 Mar 6:54 am CDT
Extended Forecast for

Silex MO

  • Today

    Today: Mostly sunny, with a high near 62. Southeast wind 6 to 11 mph, with gusts as high as 24 mph.

    High: 62 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. Southeast wind 8 to 11 mph, with gusts as high as 26 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, mainly after 1pm. High near 66. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.

    High: 66 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain and snow, becoming all snow after 10pm. Low around 16. Blustery, with a northwest wind 18 to 25 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Blustery.
    Rain/Snow
    then Snow

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 26. Blustery, with a northwest wind 17 to 23 mph, with gusts as high as 45 mph.

    High: 26 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 62. Southeast wind 6 to 11 mph, with gusts as high as 24 mph.
Tonight
Mostly cloudy, with a low around 52. Southeast wind 8 to 11 mph, with gusts as high as 26 mph.
Sunday
Rain, mainly after 1pm. High near 66. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Sunday Night
Rain and snow, becoming all snow after 10pm. Low around 16. Blustery, with a northwest wind 18 to 25 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 26. Blustery, with a northwest wind 17 to 23 mph, with gusts as high as 45 mph.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A chance of snow before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Silex MO
 39.13°N 91.04°W (Elev. 600 ft)
Last Update:
6:16 am CDT Mar 14, 2026
Forecast Valid:
7am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation