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 and Breezy

28°F

-2°C

Humidity 44%
Wind Speed W 21 G 39 mph
Barometer 29.93 in (1013.9 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 16 Jan 10:54 pm CST
Extended Forecast for

3 Miles NNW Brussels IL

  • Tonight

    Tonight: A 20 percent chance of snow before 3am. Partly cloudy, with a low around 19. West wind 11 to 15 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 24. West wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 24 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 11. West wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 11 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 33 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 12 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow before 3am. Partly cloudy, with a low around 19. West wind 11 to 15 mph, with gusts as high as 28 mph.
Saturday
Partly sunny, with a high near 24. West wind 13 to 17 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 11. West wind 7 to 13 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 33. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 12. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.
M.L.King Day
Sunny, with a high near 22.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 35. Chance of precipitation is 20%.
Thursday Night
A slight chance of snow and freezing rain. Partly cloudy, with a low around 23. Chance of precipitation is 20%.
Friday
A slight chance of rain or freezing rain. Mostly sunny, with a high near 39. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Brussels IL
 39.01°N 90.61°W (Elev. 610 ft)
Last Update:
9:56 pm CST Jan 16, 2026
Forecast Valid:
11pm CST Jan 16, 2026-6pm CST Jan 23, 2026
 
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Chance of Precipitation