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.

Fair

37°F

3°C

Humidity 39%
Wind Speed E 7 mph
Barometer 30.41 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 23 Mar 8:55 pm CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. East wind 5 to 7 mph, with gusts as high as 18 mph.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. South wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. South southeast wind 6 to 8 mph, with gusts as high as 17 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. South wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. South wind around 6 mph, with gusts as high as 15 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 81. South southwest wind 7 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 34. Breezy, with a north northeast wind around 21 mph, with gusts as high as 30 mph.

    Low: 34 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. East wind 5 to 7 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 56. South wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 43. South southeast wind 6 to 8 mph, with gusts as high as 17 mph.
Wednesday
Partly sunny, with a high near 72. South wind 8 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 55. South wind around 6 mph, with gusts as high as 15 mph.
Thursday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 81. South southwest wind 7 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 34. Breezy, with a north northeast wind around 21 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 66.
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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:
8:41 pm CDT Mar 23, 2026
Forecast Valid:
9pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation