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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Partly Cloudy

39°F

4°C

Humidity 67%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 14 Feb 7:35 pm CST
Extended Forecast for

4 Miles WNW Castleton IL

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Cloudy then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 59. Northwest wind 3 to 7 mph.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 38. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 38 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 63. South southwest wind 6 to 15 mph, with gusts as high as 22 mph.

    High: 63 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. South wind 6 to 8 mph, with gusts as high as 17 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. South southeast wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. South southeast wind 14 to 17 mph becoming southwest after midnight. Winds could gust as high as 28 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 67. Breezy.

    High: 67 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. Light and variable wind.
Sunday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 59. Northwest wind 3 to 7 mph.
Sunday Night
Increasing clouds, with a low around 38. Calm wind becoming south southwest around 6 mph after midnight.
Washington's Birthday
Partly sunny, with a high near 63. South southwest wind 6 to 15 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 42. South wind 6 to 8 mph, with gusts as high as 17 mph.
Tuesday
Mostly cloudy, with a high near 64. South southeast wind 6 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 54. South southeast wind 14 to 17 mph becoming southwest after midnight. Winds could gust as high as 28 mph.
Wednesday
Sunny, with a high near 67. Breezy.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 45.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Castleton IL
 41.14°N 89.77°W (Elev. 676 ft)
Last Update:
7:06 pm CST Feb 14, 2026
Forecast Valid:
7pm CST Feb 14, 2026-6pm CST Feb 21, 2026
 
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Additional Resources

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