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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

52°F

11°C

Humidity 43%
Wind Speed W 13 G 22 mph
Barometer 29.83 in (1010.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 13 Mar 8:54 am CDT
Extended Forecast for

Silex MO

  • Today

    Today: Mostly sunny, with a high near 57. West wind 11 to 16 mph, with gusts as high as 31 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65. East wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. South wind 6 to 10 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 68. South wind 11 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.

    High: 68 °F

    Rain Likely
    then Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow. Some thunder is also possible. Low around 18. Blustery. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Blustery.
    Rain/Snow
    then Snow

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Partly sunny, with a high near 27. Blustery.

    High: 27 °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

Detailed Forecast

Today
Mostly sunny, with a high near 57. West wind 11 to 16 mph, with gusts as high as 31 mph.
Tonight
Partly cloudy, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 65. East wind 5 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly cloudy, with a low around 53. South wind 6 to 10 mph, with gusts as high as 24 mph.
Sunday
Rain likely and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 68. South wind 11 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.
Sunday Night
Rain before 10pm, then snow. Some thunder is also possible. Low around 18. Blustery. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Monday
A 30 percent chance of snow before 1pm. Partly sunny, with a high near 27. Blustery.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A slight chance of snow before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Silex MO
 39.13°N 91.06°W (Elev. 600 ft)
Last Update:
8:21 am CDT Mar 13, 2026
Forecast Valid:
9am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation