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

53°F

12°C

Humidity 23%
Wind Speed S 9 mph
Barometer 30.27 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 24 Mar 1:55 pm CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 55. South wind 7 to 9 mph.

    High: 55 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Southeast wind 5 to 7 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. South southwest wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. South wind around 8 mph, with gusts as high as 16 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Southwest wind 7 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 34. North northeast wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    Low: 34 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 50. North northeast wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 50 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Clear, with a low around 27.

    Low: 27 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 55. South wind 7 to 9 mph.
Tonight
Mostly cloudy, with a low around 41. Southeast wind 5 to 7 mph, with gusts as high as 15 mph.
Wednesday
Mostly sunny, with a high near 72. South southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 55. South wind around 8 mph, with gusts as high as 16 mph.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Southwest wind 7 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 34. North northeast wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 50. North northeast wind 11 to 14 mph, with gusts as high as 23 mph.
Friday Night
Clear, with a low around 27.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 75.
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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:
1:56 pm CDT Mar 24, 2026
Forecast Valid:
2pm CDT Mar 24, 2026-6pm CDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation