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Current conditions at
Marshall County Airport (KC75)
Lat: 41.02°NLon: 89.39°WElev: 545ft.
Fair
76°F
24°C
| Humidity | 32% |
| Wind Speed | W 7 mph |
| Barometer | 29.89 in |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Heat Index | 77°F (25°C) |
| Last update | 15 Jun 5:35 pm CDT |
Extended Forecast for
Castleton IL
Tonight
Low: 57 °F
Mostly Clear
Tuesday
High: 77 °F
Chance
T-storms then
SunnyTuesday Night
Low: 54 °F
Increasing
CloudsWednesday
High: 79 °F
Showers then
Heavy Rain
and BreezyWednesday Night
Low: 61 °F
Showers
Likely and
BreezyThursday
High: 74 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Juneteenth
High: 77 °F
Sunny
Friday Night
Low: 57 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 57. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly before 10am. Sunny, with a high near 77. South southwest wind 13 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Increasing clouds, with a low around 54. West northwest wind 9 to 14 mph becoming light and variable. Winds could gust as high as 22 mph.
Wednesday
Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 79. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Breezy, with a west southwest wind 16 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Mostly sunny, with a high near 74. West northwest wind 14 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 55. West northwest wind 5 to 9 mph, with gusts as high as 16 mph.
Juneteenth
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 57.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
A chance of showers. Partly cloudy, with a low around 61.
Sunday
A chance of showers. Partly sunny, with a high near 79.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Monday
A chance of showers. Mostly sunny, with a high near 78.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Castleton IL
41.12°N 89.71°W (Elev. 768 ft)
41.12°N 89.71°W (Elev. 768 ft)
1:26 pm CDT Jun 15, 2026
6pm CDT Jun 15, 2026-6pm CDT Jun 22, 2026
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