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.

Fair

55°F

13°C

Humidity 87%
Wind Speed Calm
Barometer 29.56 in (1000.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 18 Feb 3:54 am CST
Extended Forecast for

2 Miles SW Brussels IL

  • Today

    Today: Sunny, with a high near 72. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Southeast wind 3 to 7 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 71. Southeast wind 7 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.

    High: 71 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. West wind 13 to 18 mph, with gusts as high as 28 mph.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48. West wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow. Partly sunny, with a high near 42.

    High: 42 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Partly cloudy, with a low around 23.

    Low: 23 °F

    Chance Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 72. West wind 6 to 11 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 47. Southeast wind 3 to 7 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 71. Southeast wind 7 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.
Thursday Night
Mostly clear, with a low around 35. West wind 13 to 18 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 48. West wind 7 to 16 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 42.
Saturday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 23.
Sunday
Sunny, with a high near 38.
Sunday Night
Mostly clear, with a low around 19.
Monday
Sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Brussels IL
 38.92°N 90.62°W (Elev. 502 ft)
Last Update:
3:06 am CST Feb 18, 2026
Forecast Valid:
4am CST Feb 18, 2026-6pm CST Feb 24, 2026
 
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