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

66°F

19°C

Humidity 59%
Wind Speed SW 14 G 22 mph
Barometer 29.56 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 22 Mar 3:35 am CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly clear, with a low around 54. South southwest wind around 13 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers between 2pm and 4pm. Mostly cloudy, with a temperature falling to around 48 by 5pm. Breezy, with a north northwest wind 8 to 13 mph becoming north northeast 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    High: 60 °F⇓

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. North northeast wind 8 to 18 mph, with gusts as high as 30 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51. North northeast wind 5 to 7 mph, with gusts as high as 15 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Calm wind becoming southeast around 6 mph after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. South wind 6 to 10 mph, with gusts as high as 17 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. South southeast wind around 6 mph, with gusts as high as 15 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 67.

    High: 67 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. South southwest wind around 13 mph, with gusts as high as 22 mph.
Sunday
A slight chance of showers between 2pm and 4pm. Mostly cloudy, with a temperature falling to around 48 by 5pm. Breezy, with a north northwest wind 8 to 13 mph becoming north northeast 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 29. North northeast wind 8 to 18 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 51. North northeast wind 5 to 7 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 33. Calm wind becoming southeast around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 61. South wind 6 to 10 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly cloudy, with a low around 43. South southeast wind around 6 mph, with gusts as high as 15 mph.
Wednesday
Mostly cloudy, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
A 30 percent chance of rain after 1pm. Mostly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 56.
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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:
1:26 am CDT Mar 22, 2026
Forecast Valid:
3am CDT Mar 22, 2026-6pm CDT Mar 28, 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