Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

64°F

18°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1015.2 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 27 Aug 5:54 am CDT
Extended Forecast for

Brussels IL

  • Today

    Today: Sunny, with a high near 84. North wind 3 to 8 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. North wind around 6 mph becoming calm  in the evening.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 87. Light north wind.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Light southeast wind.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 89. South wind 3 to 7 mph.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 84. North wind 3 to 8 mph.
Tonight
Mostly clear, with a low around 63. North wind around 6 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Light north wind.
Friday Night
Mostly clear, with a low around 62. Light southeast wind.
Saturday
Mostly sunny, with a high near 89. South wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 74.
Monday
Mostly sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Mostly sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Brussels IL
 38.94°N 90.59°W (Elev. 505 ft)
4:31 am CDT Aug 27, 2026
6am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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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