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.

Overcast

49°F

9°C

Humidity 69%
Wind Speed W 17 G 30 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 4 Apr 3:54 pm CDT
Extended Forecast for

3 Miles ENE Brussels IL

  • Tonight

    Tonight: Partly cloudy, with a low around 38. West wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. Northwest wind around 10 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41. West wind around 6 mph.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 60. Northwest wind 6 to 9 mph.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36. North wind 8 to 10 mph.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. West wind 9 to 15 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 59. Northwest wind around 10 mph.
Sunday Night
Clear, with a low around 41. West wind around 6 mph.
Monday
Sunny, with a high near 60. Northwest wind 6 to 9 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36. North wind 8 to 10 mph.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 55.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 73.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Brussels IL
 38.98°N 90.53°W (Elev. 712 ft)
Last Update:
1:26 pm CDT Apr 4, 2026
Forecast Valid:
4pm CDT Apr 4, 2026-6pm CDT Apr 11, 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