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.

Mostly Cloudy

34°F

1°C

Humidity 76%
Wind Speed S 3 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 3 Dec 12:54 pm CST
Extended Forecast for

2 Miles SW Brussels IL

  • This Afternoon

    This Afternoon: A chance of sprinkles and flurries before 2pm, then a chance of rain between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 50%.

    High: 37 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: Rain and snow likely before 2am, then a chance of flurries between 2am and 4am. Cloudy, with a low around 11. Light northwest wind becoming north 8 to 13 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 11 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 22. North wind 3 to 8 mph.

    High: 22 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12. Light and variable wind.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 38. South wind 3 to 6 mph.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow. Mostly cloudy, with a high near 31.

    High: 31 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
A chance of sprinkles and flurries before 2pm, then a chance of rain between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 50%.
Tonight
Rain and snow likely before 2am, then a chance of flurries between 2am and 4am. Cloudy, with a low around 11. Light northwest wind becoming north 8 to 13 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 22. North wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 12. Light and variable wind.
Friday
Sunny, with a high near 38. South wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 37.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 43.
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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:
1:36 pm CST Dec 3, 2025
Forecast Valid:
1pm CST Dec 3, 2025-6pm CST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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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