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

85°F

29°C

Humidity 45%
Wind Speed SE 10 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 6 Oct 4:54 pm CDT
Extended Forecast for

2 Miles SW Brussels IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind around 6 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 63. Southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, with a high near 71. North wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 50. North wind 6 to 9 mph.

    Low: 50 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 73. Northeast wind 6 to 9 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind around 6 mph.
Tonight
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 63. Southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, with a high near 71. North wind 6 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 50. North wind 6 to 9 mph.
Wednesday
Sunny, with a high near 73. Northeast wind 6 to 9 mph.
Wednesday Night
Clear, with a low around 45.
Thursday
Sunny, with a high near 72.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 60.
Columbus Day
Mostly sunny, with a high near 83.
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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:
4:16 pm CDT Oct 6, 2025
Forecast Valid:
5pm CDT Oct 6, 2025-6pm CDT Oct 13, 2025
 
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