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

36°F

2°C

Humidity 63%
Wind Speed NW 7 mph
Barometer 30.12 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 14 Mar 12:35 am CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 30. North northwest wind around 5 mph becoming calm.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 48. Light east wind becoming east southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 48 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 42. East southeast wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain likely before 10am, then showers, mainly after 10am. High near 66. Breezy, with a south wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Rain showers before 10pm, then snow. Low around 19. Blustery, with a west southwest wind 22 to 29 mph becoming northwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 19 °F

    Blustery.
    Rain/Snow
    then Snow

  • Monday

    Monday: A 50 percent chance of snow before 1pm. Mostly cloudy, with a high near 23. Blustery, with a west northwest wind 25 to 28 mph, with gusts as high as 39 mph.

    High: 23 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8. Blustery, with a west northwest wind 14 to 24 mph, with gusts as high as 33 mph.

    Low: 8 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 30. North northwest wind around 5 mph becoming calm.
Saturday
A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 48. Light east wind becoming east southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 42. East southeast wind 13 to 15 mph, with gusts as high as 26 mph.
Sunday
Rain likely before 10am, then showers, mainly after 10am. High near 66. Breezy, with a south wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers before 10pm, then snow. Low around 19. Blustery, with a west southwest wind 22 to 29 mph becoming northwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Monday
A 50 percent chance of snow before 1pm. Mostly cloudy, with a high near 23. Blustery, with a west northwest wind 25 to 28 mph, with gusts as high as 39 mph.
Monday Night
Partly cloudy, with a low around 8. Blustery, with a west northwest wind 14 to 24 mph, with gusts as high as 33 mph.
Tuesday
Partly sunny, with a high near 27.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly 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 CDT Mar 14, 2026
Forecast Valid:
12am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation