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

26°F

-3°C

Humidity 84%
Wind Speed Calm
Barometer 30.19 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 11 Feb 1:15 am CST
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly clear, with a low around 26. North northwest wind 7 to 9 mph, with gusts as high as 17 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46. Northwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. Light and variable wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.

    High: 46 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. Southeast wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 51. Calm wind becoming south southwest around 6 mph in the morning.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. Light south wind.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after midnight. Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 26. North northwest wind 7 to 9 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 46. Northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Increasing clouds, with a low around 29. Light and variable wind.
Thursday
Mostly cloudy, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 29. Southeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 51. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 31. Light south wind.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
A 30 percent chance of rain after midnight. Partly cloudy, with a low around 35.
Sunday
Sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 33.
Washington's Birthday
Mostly sunny, with a high near 55.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 59.
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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:
12:36 am CST Feb 11, 2026
Forecast Valid:
1am CST Feb 11, 2026-6pm CST Feb 17, 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