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.

Overcast

42°F

6°C

Humidity 80%
Wind Speed W 16 G 22 mph
Barometer 29.88 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 7 Mar 1:55 pm CST
Extended Forecast for

4 Miles WNW Castleton IL

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 40. West wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 40 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West northwest wind 6 to 13 mph becoming south southwest after midnight. Winds could gust as high as 22 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 65. Southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 51. South southwest wind around 7 mph, with gusts as high as 15 mph.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 78. South wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 40. Chance of precipitation is 90%.

    Low: 40 °F

    Showers

  • Wednesday

    Wednesday: Showers, mainly before noon. High near 55. Breezy. Chance of precipitation is 80%.

    High: 55 °F

    Showers then
    Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 40. West wind 15 to 18 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West northwest wind 6 to 13 mph becoming south southwest after midnight. Winds could gust as high as 22 mph.
Sunday
Sunny, with a high near 65. Southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 45. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 73. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Monday Night
Clear, with a low around 51. South southwest wind around 7 mph, with gusts as high as 15 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 78. South wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm. Low around 40. Chance of precipitation is 90%.
Wednesday
Showers, mainly before noon. High near 55. Breezy. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
Mostly cloudy, with a low around 40. Breezy.
Friday
Mostly cloudy, with a high near 61. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Castleton IL
 41.14°N 89.77°W (Elev. 676 ft)
Last Update:
1:11 pm CST Mar 7, 2026
Forecast Valid:
2pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation