Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

51°F

11°C

Humidity 77%
Wind Speed NW 13 G 21 mph
Barometer 30.43 in (1030.3 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 16 Oct 9:54 pm CDT
Extended Forecast for

4 Miles E Brussels IL

Frost Advisory October 17, 01:00am until October 17, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 40. North wind 8 to 14 mph.

    Low: 40 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 62. North wind around 5 mph becoming calm  in the morning.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Patchy frost before 8am.  Otherwise, sunny, with a high near 67. South wind 3 to 7 mph.

    High: 67 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 40. North wind 8 to 14 mph.
Saturday
Sunny, with a high near 62. North wind around 5 mph becoming calm in the morning.
Saturday Night
Clear, with a low around 39. Light and variable wind.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 67. South wind 3 to 7 mph.
Sunday Night
Clear, with a low around 41. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Clear, with a low around 48.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 52.
Friday
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Brussels IL
 38.96°N 90.5°W (Elev. 417 ft)
10:36 pm CDT Oct 16, 2026
10pm CDT Oct 16, 2026-6pm CDT Oct 23, 2026
 
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