Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Overcast
63°F
17°C
| Humidity | 97% |
| Wind Speed | S 8 mph |
| Barometer | 29.91 in (1012.5 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 4 Apr 7:53 am CDT |
Extended Forecast for
Sullivan IL
Today
High: 65 °F⇓
Showers then
Chance
ShowersTonight

Low: 36 °F
Decreasing
CloudsSunday

High: 52 °F
Mostly Sunny
Sunday Night

Low: 37 °F
Mostly Clear
Monday

High: 55 °F
Sunny
Monday Night

Low: 29 °F
Partly Cloudy
Tuesday

High: 49 °F
Mostly Sunny
Tuesday Night

Low: 36 °F
Mostly Cloudy
Wednesday

High: 67 °F
Partly Sunny
Detailed Forecast
Today
Showers and possibly a thunderstorm before 2pm, then a slight chance of showers between 2pm and 4pm. Temperature falling to around 54 by 2pm. West wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West northwest wind 10 to 15 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 52. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 37. West wind 6 to 8 mph.
Monday
Sunny, with a high near 55. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 29. Northwest wind around 10 mph becoming north northeast after midnight. Winds could gust as high as 17 mph.
Tuesday
Mostly sunny, with a high near 49. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Partly sunny, with a high near 74.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Sullivan IL
39.59°N 88.61°W (Elev. 669 ft)
39.59°N 88.61°W (Elev. 669 ft)
7:42 am CDT Apr 4, 2026
8am CDT Apr 4, 2026-6pm CDT Apr 10, 2026



