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

44°F

7°C

Humidity 96%
Wind Speed NE 3 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Last update 26 Dec 9:54 pm CST
Extended Forecast for

Fieldon IL

Dense Fog Advisory December 26, 10:40pm until December 27, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 26, 10:40pm until December 27, 09:00am

    NOW until 9:00am Sat

    Dense Fog Advisory

  • Tonight

    Low: 43 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 60 °F

    Areas Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A chance of rain, with thunderstorms also possible after 3am. Cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 69. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%.

    High: 69 °F

    Rain Likely
    then Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 9pm. Mostly cloudy, with a low around 19. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 36 mph.

    Low: 19 °F

    Blustery.
    Chance Rain
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 25. Blustery.

    High: 25 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 43. Calm wind becoming east around 6 mph after midnight.
Saturday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of rain, with thunderstorms also possible after 3am. Cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Rain and possibly a thunderstorm. High near 69. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%.
Sunday Night
A 40 percent chance of rain before 9pm. Mostly cloudy, with a low around 19. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 36 mph.
Monday
Mostly sunny, with a high near 25. Blustery.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 18.
New Year's Day
Partly sunny, with a high near 27.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fieldon IL
 39.11°N 90.49°W (Elev. 640 ft)
Last Update:
9:31 pm CST Dec 26, 2025
Forecast Valid:
10pm CST Dec 26, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation