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 77%
Wind Speed Calm
Barometer 30.29 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 4 Nov 5:15 am CST
Extended Forecast for

Castleton IL

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 67. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 67 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Mostly clear, with a low around 49. South wind 11 to 14 mph becoming west southwest after midnight. Winds could gust as high as 23 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61. West southwest wind 9 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 31 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Light east southeast wind becoming south southeast 11 to 16 mph in the morning. Winds could gust as high as 24 mph.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 51. South southeast wind 14 to 18 mph becoming southwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 65. West wind 14 to 17 mph, with gusts as high as 24 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 67. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 49. South wind 11 to 14 mph becoming west southwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 61. West southwest wind 9 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 32. North northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 60. Light east southeast wind becoming south southeast 11 to 16 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 51. South southeast wind 14 to 18 mph becoming southwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 65. West wind 14 to 17 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 54.
Saturday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 41.
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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:
4:39 am CST Nov 4, 2025
Forecast Valid:
5am CST Nov 4, 2025-6pm CST Nov 10, 2025
 
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Additional Resources

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Chance of Precipitation