Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Overcast

75°F

24°C

Humidity 89%
Wind Speed E 7 mph
Barometer 29.93 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 13 Aug 7:55 pm CDT
Extended Forecast for

4 Miles WNW Castleton IL

Flood Watch August 13, 08:14pm until August 14, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 13, 08:14pm until August 14, 10:00am

    NOW until 10:00am Fri

    Flood Watch

  • Tonight

    Low: 68 °F

    Chance
    T-storms then
    Heavy Rain

  • Friday

    Friday: Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm. Some of the storms could produce heavy rainfall.  Cloudy, then gradually becoming mostly sunny, with a high near 84. East wind around 8 mph, with gusts as high as 15 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 84 °F

    Heavy Rain
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 10pm.  Partly cloudy, with a low around 72. East wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers before 1pm.  Partly sunny, with a high near 89. Heat index values as high as 102. South southeast wind 8 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 89 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers after 1am.  Mostly cloudy, with a low around 72. West wind 3 to 7 mph.

    Low: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 85. West northwest wind 3 to 8 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66. North northwest wind 3 to 7 mph.

    Low: 66 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 68. East wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm. Some of the storms could produce heavy rainfall. Cloudy, then gradually becoming mostly sunny, with a high near 84. East wind around 8 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 50 percent chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 72. East wind 8 to 11 mph, with gusts as high as 18 mph.
Saturday
A 50 percent chance of showers before 1pm. Partly sunny, with a high near 89. Heat index values as high as 102. South southeast wind 8 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 72. West wind 3 to 7 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. West northwest wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly cloudy, with a low around 66. North northwest wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Castleton IL
 41.14°N 89.77°W (Elev. 676 ft)
8:06 pm CDT Aug 13, 2026
8pm CDT Aug 13, 2026-6pm CDT Aug 20, 2026
 
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Additional Resources

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