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

88°F

31°C

Humidity 32%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Oct 2:15 pm CDT
Extended Forecast for

3 Miles WNW Castleton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 91. South southwest wind around 8 mph.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. South wind around 5 mph becoming calm after midnight.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89. South southwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 61. South wind around 9 mph, with gusts as high as 17 mph.

    Low: 61 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind 8 to 17 mph, with gusts as high as 24 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 85. South southwest wind 6 to 8 mph becoming west northwest in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 91. South southwest wind around 8 mph.
Tonight
Mostly clear, with a low around 65. South wind around 5 mph becoming calm after midnight.
Saturday
Sunny, with a high near 89. South southwest wind 6 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Clear, with a low around 61. South wind around 9 mph, with gusts as high as 17 mph.
Sunday
Sunny, with a high near 87. South wind 8 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 63. South wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 85. South southwest wind 6 to 8 mph becoming west northwest in the afternoon.
Monday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Tuesday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Castleton IL
 41.14°N 89.74°W (Elev. 728 ft)
Last Update:
12:51 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation