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Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

73°F

23°C

Humidity 82%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 12 Aug 1:55 pm CDT
Extended Forecast for

4 Miles WNW Castleton IL

Flood Advisory until August 12, 02:45pm
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until August 12, 02:45pm

    NOW until 2:45pm Wed

    Flood Advisory

  • This Afternoon

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 68. East wind 3 to 5 mph.

    Low: 68 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 3pm. Mostly cloudy, with a high near 80. East wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 68. East wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 68 °F

    T-storms
    Likely then
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 83. East wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely after 10pm. Mostly cloudy, with a low around 70. East wind 7 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Southeast wind around 8 mph becoming southwest in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 3pm. Mostly cloudy, with a high near 82. South wind around 6 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 68. East wind 3 to 5 mph.
Thursday
Showers and thunderstorms likely, mainly after 3pm. Mostly cloudy, with a high near 80. East wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 68. East wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 83. East wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers likely after 10pm. Mostly cloudy, with a low around 70. East wind 7 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Southeast wind around 8 mph becoming southwest in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
Partly sunny, with a high near 85.
Sunday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 80.
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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:
2:11 pm CDT Aug 12, 2026
Forecast Valid:
2pm CDT Aug 12, 2026-6pm CDT Aug 18, 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