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.

Fair

1°F

-17°C

Humidity 79%
Wind Speed Calm
Barometer 30.31 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 29 Jan 4:35 am CST
Extended Forecast for

4 Miles WNW Castleton IL

  • Today

    Today: Mostly cloudy, with a high near 15. Wind chill values between -4 and 6. North northwest wind 3 to 6 mph.

    High: 15 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 0. Wind chill values between -5 and -10. North wind 3 to 6 mph.

    Low: 0 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 16. Wind chill values between -10 and zero. North wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 16 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 4. Wind chill values between -1 and -11. North northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 4 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 23. North northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 23 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 6. Northwest wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 27. Light south southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 17 mph.

    High: 27 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 15. Wind chill values between -4 and 6. North northwest wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 0. Wind chill values between -5 and -10. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 16. Wind chill values between -10 and zero. North wind 5 to 11 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 4. Wind chill values between -1 and -11. North northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 23. North northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 6. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 27. Light south southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 17 mph.
Sunday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 18.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 19.
Wednesday
A chance of snow. Mostly cloudy, with a high near 30.
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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:
3:21 am CST Jan 29, 2026
Forecast Valid:
4am CST Jan 29, 2026-6pm CST Feb 4, 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