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

22°F

-6°C

Humidity 89%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 13 Feb 1:15 am CST
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly clear, with a low around 29. Southeast wind around 6 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56. South southwest wind 6 to 11 mph, with gusts as high as 17 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 30. South southwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 53. Calm wind becoming south southeast around 5 mph.

    High: 53 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. Light northwest wind.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 29. Southeast wind around 6 mph.
Friday
Sunny, with a high near 56. South southwest wind 6 to 11 mph, with gusts as high as 17 mph.
Friday Night
Increasing clouds, with a low around 30. South southwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 53. Calm wind becoming south southeast around 5 mph.
Saturday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 36. Light and variable wind.
Sunday
Sunny, with a high near 59. Light northwest wind.
Sunday Night
Mostly clear, with a low around 37. Calm wind becoming south southwest around 6 mph after midnight.
Washington's Birthday
Partly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Castleton IL
 41.14°N 89.77°W (Elev. 676 ft)
Last Update:
12:51 am CST Feb 13, 2026
Forecast Valid:
1am CST Feb 13, 2026-6pm CST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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