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.

Overcast

74°F

23°C

Humidity 67%
Wind Speed S 12 mph
Barometer 29.87 in (1010.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 4 Apr 1:54 am CDT
Extended Forecast for

3 Miles ENE Brussels IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 57. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before 9am. Cloudy, with a temperature falling to around 53 by noon. West wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    High: 61 °F⇓

    Showers
    Likely then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. West wind 8 to 15 mph, with gusts as high as 24 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. Northwest wind 7 to 11 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40. West wind 3 to 6 mph.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 57. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday
Showers likely, mainly before 9am. Cloudy, with a temperature falling to around 53 by noon. West wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 39. West wind 8 to 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 59. Northwest wind 7 to 11 mph.
Sunday Night
Clear, with a low around 40. West wind 3 to 6 mph.
Monday
Sunny, with a high near 61.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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
 38.96°N 90.53°W (Elev. 443 ft)
Last Update:
1:25 am CDT Apr 4, 2026
Forecast Valid:
2am CDT Apr 4, 2026-6pm CDT Apr 10, 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