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

32°F

0°C

Humidity 89%
Wind Speed SW 5 mph
Barometer 29.97 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 8 Mar 3:15 am CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly clear, with a low around 34. South southwest wind around 8 mph, with gusts as high as 16 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 65 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. South southwest wind around 8 mph, with gusts as high as 17 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 79. South wind 8 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: 79 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 42. South southwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 42 °F

    T-storms

  • Wednesday

    Wednesday: Rain showers before 1pm, then a chance of rain and snow showers. High near 54. Breezy. Chance of precipitation is 80%.

    High: 54 °F

    Breezy.
    Showers then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 34. South southwest wind around 8 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 65. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Clear, with a low around 45. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 72. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 51. South southwest wind around 8 mph, with gusts as high as 17 mph.
Tuesday
Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 79. South wind 8 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 42. South southwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
Rain showers before 1pm, then a chance of rain and snow showers. High near 54. Breezy. Chance of precipitation is 80%.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 40. Breezy.
Friday
Partly sunny, with a high near 57. Breezy.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Mostly cloudy, with a high near 46.
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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:
1:51 am CST Mar 8, 2026
Forecast Valid:
3am CDT Mar 8, 2026-6pm CDT Mar 14, 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