National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog/Mist

46°F

8°C

Humidity 86%
Wind Speed N 8 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 42°F (6°C)
Visibility 5.00 mi
Wind Chill42°F (6°C)
Last update 22 Nov 9:54 am CST
Extended Forecast for

2 Miles SW Brussels IL

  • Today

    Today: Mostly sunny, with a high near 55. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. West wind 3 to 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 57. Northwest wind around 5 mph becoming calm in the morning.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 42. Calm wind becoming southeast around 6 mph after midnight.

    Low: 42 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers, mainly after noon. High near 57. Southeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 57 °F

    Slight Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers, mainly before midnight. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Showers then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 55. Light and variable wind becoming west around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 42. West wind 3 to 6 mph.
Sunday
Sunny, with a high near 57. Northwest wind around 5 mph becoming calm in the morning.
Sunday Night
Increasing clouds, with a low around 42. Calm wind becoming southeast around 6 mph after midnight.
Monday
Showers, mainly after noon. High near 57. Southeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Showers, mainly before midnight. Low around 50. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of showers after noon. Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 47.
Wednesday Night
Partly cloudy, with a low around 29.
Thanksgiving Day
Mostly sunny, with a high near 45.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 44.
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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:
10:26 am CST Nov 22, 2025
Forecast Valid:
10am CST Nov 22, 2025-6pm CST Nov 28, 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