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

25°F

-4°C

Humidity 76%
Wind Speed N 6 mph
Barometer 30.34 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 1 Mar 2:55 am CST
Extended Forecast for

4 Miles WNW Castleton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 22. North northeast wind around 9 mph, with gusts as high as 18 mph.

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 38. East northeast wind 8 to 10 mph, with gusts as high as 17 mph.

    High: 38 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. East wind around 8 mph, with gusts as high as 16 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 46. East southeast wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 46 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Rain likely after midnight. Cloudy, with a low around 35. Southeast wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Cloudy then
    Rain Likely

  • Tuesday

    Tuesday: Showers. High near 49. East wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. East northeast wind around 7 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. North northeast wind around 9 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 38. East northeast wind 8 to 10 mph, with gusts as high as 17 mph.
Sunday Night
Mostly cloudy, with a low around 24. East wind around 8 mph, with gusts as high as 16 mph.
Monday
Mostly cloudy, with a high near 46. East southeast wind 7 to 10 mph, with gusts as high as 17 mph.
Monday Night
Rain likely after midnight. Cloudy, with a low around 35. Southeast wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers. High near 49. East wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. East northeast wind around 7 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 60. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 44.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 61.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Friday
Showers likely. Cloudy, with a high near 67.
Friday Night
Showers likely. Mostly cloudy, with a low around 45.
Saturday
A chance of showers. Cloudy, 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:
2:57 am CST Mar 1, 2026
Forecast Valid:
3am CST Mar 1, 2026-6pm CST Mar 7, 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