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Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Mostly Cloudy

70°F

21°C

Humidity 76%
Wind Speed N 3 mph
Barometer 29.90 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Oct 11:15 pm CDT
Extended Forecast for

Castleton IL

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 62. Light north wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Northeast wind 6 to 8 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 55. East northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers. High near 68. East northeast wind around 8 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 68 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 45. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 58. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 34 mph.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 33. North northwest wind 8 to 13 mph becoming light north after midnight. Winds could gust as high as 21 mph.

    Low: 33 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 62. Light north wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Northeast wind 6 to 8 mph. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 55. East northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday
Showers. High near 68. East northeast wind around 8 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Showers likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 45. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 58. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 34 mph.
Friday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 33. North northwest wind 8 to 13 mph becoming light north after midnight. Winds could gust as high as 21 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 61.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 73.
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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:
10:36 pm CDT Oct 13, 2026
Forecast Valid:
11pm CDT Oct 13, 2026-6pm CDT Oct 20, 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