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

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fog/Mist

39°F

4°C

Humidity 92%
Wind Speed SE 5 mph
Barometer 29.98 in
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Wind Chill35°F (2°C)
Last update 27 Dec 4:35 am CST
Extended Forecast for

Castleton IL

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

    NOW until 10:00am Sat

    Dense Fog Advisory

  • Overnight

    Low: 38 °F

    Patchy Dense
    Fog

  • Saturday

    Saturday: Patchy dense fog before 9am. Otherwise, cloudy, with a high near 51. Southeast wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 51 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Cloudy, with a low around 48. South wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. Temperature rising to near 57 by 10am, then falling to around 46 during the remainder of the day. Breezy, with a south wind 6 to 11 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 57 °F⇓

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A chance of rain showers before 9pm, then a chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 14. Windy, with a west northwest wind 23 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 40%.

    Low: 14 °F

    Chance
    Rain/Snow and
    Blustery then
    Mostly Cloudy
    and Windy

  • Monday

    Monday: Mostly cloudy, with a high near 21. Windy, with a west northwest wind 22 to 30 mph, with gusts as high as 46 mph.

    High: 21 °F

    Mostly Cloudy
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 34 mph.

    Low: 11 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, cloudy, with a low around 38. East southeast wind around 5 mph.
Saturday
Patchy dense fog before 9am. Otherwise, cloudy, with a high near 51. Southeast wind 6 to 11 mph, with gusts as high as 22 mph.
Saturday Night
A 40 percent chance of showers. Cloudy, with a low around 48. South wind 6 to 11 mph, with gusts as high as 22 mph.
Sunday
Showers. Temperature rising to near 57 by 10am, then falling to around 46 during the remainder of the day. Breezy, with a south wind 6 to 11 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
A chance of rain showers before 9pm, then a chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 14. Windy, with a west northwest wind 23 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 40%.
Monday
Mostly cloudy, with a high near 21. Windy, with a west northwest wind 22 to 30 mph, with gusts as high as 46 mph.
Monday Night
Mostly clear, with a low around 11. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 34 mph.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 12.
New Year's Day
Mostly sunny, with a high near 20.
Thursday Night
Mostly clear, with a low around 6.
Friday
Sunny, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castleton IL
 41.12°N 89.71°W (Elev. 768 ft)
Last Update:
3:16 am CST Dec 27, 2025
Forecast Valid:
4am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation