


Current conditions at
Marshall County Airport (KC75)
Lat: 41.02°NLon: 89.39°WElev: 545ft.
Mostly Cloudy
72°F
22°C
Humidity | 53% |
Wind Speed | E 3 mph |
Barometer | 30.27 in |
Dewpoint | 54°F (12°C) |
Visibility | 10.00 mi |
Last update | 31 Aug 11:15 am CDT |
Extended Forecast for
Castleton IL
Today
High: 78 °F
Partly Sunny
Tonight
Low: 53 °F
Partly Cloudy
Labor Day
High: 80 °F
Mostly Sunny
Monday Night
Low: 54 °F
Mostly Clear
Tuesday
High: 81 °F
Sunny
Tuesday Night
Low: 56 °F
Mostly Clear
Wednesday
High: 77 °F
Chance
Showers then
Showers
LikelyWednesday Night
Low: 46 °F
Chance
ShowersThursday
High: 65 °F
Mostly Sunny
Detailed Forecast
Today
Partly sunny, with a high near 78. East northeast wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 53. East wind around 5 mph.
Labor Day
Mostly sunny, with a high near 80. Calm wind becoming east around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 54. Light east northeast wind.
Tuesday
Sunny, with a high near 81. Light east northeast wind.
Tuesday Night
Mostly clear, with a low around 56. Calm wind.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Light west southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 18 mph. 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 30 percent chance of showers before 1am. Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 73.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Castleton IL
41.12°N 89.71°W (Elev. 768 ft)
41.12°N 89.71°W (Elev. 768 ft)
10:40 am CDT Aug 31, 2025
11am CDT Aug 31, 2025-6pm CDT Sep 6, 2025