Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Light Rain
63°F
17°C
| Humidity | 87% |
| Wind Speed | S 18 G 35 mph |
| Barometer | 29.57 in (1001.0 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 9.00 mi |
| Last update | 8 Jan 10:53 pm CST |
Extended Forecast for
Sullivan IL
Tonight

Low: 44 °F
Rain Likely
and BreezyFriday

High: 50 °F
Mostly Cloudy
Friday Night

Low: 36 °F
Mostly Cloudy
Saturday
High: 42 °F
Chance Rain
then Mostly
SunnySaturday Night

Low: 20 °F
Mostly Cloudy
Sunday

High: 31 °F
Mostly Sunny
Sunday Night

Low: 21 °F
Mostly Clear
Monday

High: 43 °F
Mostly Sunny
Monday Night

Low: 32 °F
Partly Cloudy
Detailed Forecast
Tonight
Rain and thunderstorms likely before 3am, then a slight chance of rain between 3am and 5am. Partly cloudy, with a low around 44. Breezy, with a south southwest wind 18 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, with a high near 50. West wind 13 to 18 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 36. Light east northeast wind.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 42. West northwest wind 5 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 20. West northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 31. West northwest wind 7 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 21. West northwest wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.
Monday
Mostly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 33.
Wednesday
Mostly cloudy, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 32.
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)
8:38 pm CST Jan 8, 2026
11pm CST Jan 8, 2026-6pm CST Jan 15, 2026



