Current conditions at
Marshall County Airport (KC75)
Lat: 41.02°NLon: 89.39°WElev: 545ft.
Fair
81°F
27°C
| Humidity | 27% |
| Wind Speed | SW 8 mph |
| Barometer | 29.69 in |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 21 Mar 5:55 pm CDT |
Extended Forecast for
4 Miles WNW Castleton IL
Tonight

Low: 54 °F
Mostly Clear
Sunday
High: 62 °F
Mostly Cloudy
then Slight
Chance
Showers and
BreezySunday Night

Low: 30 °F
Partly Cloudy
Monday

High: 52 °F
Mostly Sunny
Monday Night

Low: 34 °F
Mostly Cloudy
Tuesday

High: 61 °F
Partly Sunny
Tuesday Night

Low: 43 °F
Mostly Cloudy
Wednesday

High: 64 °F
Mostly Cloudy
Wednesday Night

Low: 48 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 54. South southwest wind around 10 mph, with gusts as high as 21 mph.
Sunday
A slight chance of showers between 1pm and 4pm. Mostly cloudy, with a high near 62. Breezy, with a north northwest wind 8 to 13 mph becoming north 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 30. North northeast wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Monday
Mostly sunny, with a high near 52. North northeast wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 61. South wind 6 to 10 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly cloudy, with a low around 43. South southeast wind around 7 mph, with gusts as high as 16 mph.
Wednesday
Mostly cloudy, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 53.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles WNW Castleton IL
41.14°N 89.77°W (Elev. 676 ft)
41.14°N 89.77°W (Elev. 676 ft)
5:46 pm CDT Mar 21, 2026
6pm CDT Mar 21, 2026-6pm CDT Mar 28, 2026


