National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

87°F

31°C

Humidity 64%
Wind Speed W 6 mph
Barometer 29.93 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 10 Aug 4:35 pm CDT
Extended Forecast for

4 Miles WNW Castleton IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind around 7 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. East northeast wind around 6 mph becoming calm in the evening.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely. Partly sunny, with a high near 86. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light east northeast wind.

    Low: 69 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely. Mostly cloudy, with a high near 81. East wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind around 7 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm.
Tuesday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. East northeast wind around 6 mph becoming calm in the evening.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 86. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light east northeast wind.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. East wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.
Friday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 79.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
A chance of showers. Partly sunny, with a high near 84.
Saturday Night
A chance of showers. Partly cloudy, with a low around 70.
Sunday
A chance of showers. Partly sunny, with a high near 82.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 65.
Monday
Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Castleton IL
 41.14°N 89.77°W (Elev. 676 ft)
Last Update:
2:36 pm CDT Aug 10, 2026
Forecast Valid:
4pm CDT Aug 10, 2026-6pm CDT Aug 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