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.

Fog/Mist

73°F

23°C

Humidity 90%
Wind Speed Calm
Barometer 29.88 in (1011.3 mb)
Dewpoint 70°F (21°C)
Visibility 4.00 mi
Last update 17 Jun 7:54 am CDT
Extended Forecast for

Silex MO

  • Today

    Today: Mostly sunny, with a high near 88. Light southwest wind.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 81. Southwest wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 81 °F

    Showers
    Likely then
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 84. Calm wind becoming west around 5 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 88. Light southwest wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 81. Southwest wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Juneteenth
Sunny, with a high near 84. Calm wind becoming west around 5 mph.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 75.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Silex MO
 39.13°N 91.06°W (Elev. 600 ft)
Last Update:
4:52 am CDT Jun 17, 2025
Forecast Valid:
8am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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