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

26°F

-3°C

Humidity 81%
Wind Speed SW 10 mph
Barometer 30.00 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 3 Dec 8:15 am CST
Extended Forecast for

Castleton IL

  • Today

    Today: A slight chance of snow between 10am and 4pm. Cloudy, with a high near 32. Southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 32 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values between -6 and -11. North northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: -3 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 12. Wind chill values between -5 and -15. North northwest wind around 6 mph becoming calm in the morning.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -2. Wind chill values between -4 and -14. Light south wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 18 mph.

    Low: -2 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 28. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 28 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16. West wind 5 to 7 mph.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 28. Northwest wind around 6 mph becoming light and variable in the afternoon.

    High: 28 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of snow between 10am and 4pm. Cloudy, with a high near 32. Southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values between -6 and -11. North northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 12. Wind chill values between -5 and -15. North northwest wind around 6 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around -2. Wind chill values between -4 and -14. Light south wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Friday
Mostly sunny, with a high near 28. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 16. West wind 5 to 7 mph.
Saturday
Partly sunny, with a high near 28. Northwest wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 15.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 27.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 11.
Monday
Partly sunny, with a high near 26.
Monday Night
A chance of snow. Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castleton IL
 41.12°N 89.71°W (Elev. 768 ft)
Last Update:
6:56 am CST Dec 3, 2025
Forecast Valid:
8am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
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