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.

Fog/Mist

47°F

8°C

Humidity 90%
Wind Speed S 5 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint 44°F (7°C)
Visibility 4.00 mi
Wind Chill45°F (7°C)
Last update 23 Nov 7:54 pm CST
Extended Forecast for

Rockbridge IL

Dense Fog Advisory until November 24, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until November 24, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Tonight

    Low: 43 °F

    Areas Dense
    Fog

  • Monday

    Monday: Rain likely, mainly after 5pm. Areas of dense fog before 8am. Otherwise, cloudy, with a high near 58. South wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 58 °F

    Areas Dense
    Fog then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Patchy fog between 8pm and 1am. Low around 47. Southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 90%.

    Low: 47 °F

    Rain and
    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59. Calm wind becoming west 5 to 7 mph in the morning.

    High: 59 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32. West wind 6 to 16 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. Breezy.

    High: 42 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

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

    Low: 24 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 41.

    High: 41 °F

    Sunny

Detailed Forecast

Tonight
Areas of dense fog after 9pm. Otherwise, partly cloudy during the early evening, then becoming cloudy, with a low around 43. South wind 3 to 6 mph.
Monday
Rain likely, mainly after 5pm. Areas of dense fog before 8am. Otherwise, cloudy, with a high near 58. South wind 7 to 10 mph. Chance of precipitation is 60%.
Monday Night
Rain, mainly before midnight. Patchy fog between 8pm and 1am. Low around 47. Southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 90%.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59. Calm wind becoming west 5 to 7 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 32. West wind 6 to 16 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 42. Breezy.
Wednesday Night
Partly cloudy, with a low around 24.
Thanksgiving Day
Sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 40.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Saturday Night
Rain likely. Cloudy, with a low around 32. Chance of precipitation is 60%.
Sunday
Rain likely. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockbridge IL
 39.26°N 90.2°W (Elev. 509 ft)
Last Update:
7:31 pm CST Nov 23, 2025
Forecast Valid:
8pm CST Nov 23, 2025-6pm CST Nov 30, 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