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

71°F

22°C

Humidity 57%
Wind Speed S 5 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 10:54 am CDT
Extended Forecast for

Silex MO

  • Today

    Today: Sunny, with a high near 90. Southwest wind 3 to 5 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Calm wind becoming south around 5 mph after midnight.

    Low: 66 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. Southwest wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Southwest wind around 7 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Southwest wind 6 to 8 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 70. Chance of precipitation is 80%.

    Low: 70 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 90. Southwest wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 66. Calm wind becoming south around 5 mph after midnight.
Columbus Day
Sunny, with a high near 92. Southwest wind 5 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 72. Southwest wind around 7 mph.
Tuesday
Sunny, with a high near 91. Southwest wind 6 to 8 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 70. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Silex MO
 39.13°N 91.06°W (Elev. 600 ft)
Last Update:
11:16 am CDT Oct 11, 2026
Forecast Valid:
11am CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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