Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Partly Cloudy
61°F
16°C
| Humidity | 84% |
| Wind Speed | S 13 mph |
| Barometer | 29.60 in (1002.2 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 9 Jan 2:53 am CST |
Extended Forecast for
Sullivan IL
Overnight

Low: 45 °F
Partly Cloudy
and BreezyFriday
High: 48 °F
Cloudy and
Breezy then
CloudyFriday Night
Low: 37 °F
Mostly Cloudy
then Slight
Chance RainSaturday
High: 43 °F
Chance Rain
then Mostly
SunnySaturday Night

Low: 21 °F
Partly Cloudy
Sunday

High: 32 °F
Mostly Sunny
Sunday Night

Low: 23 °F
Mostly Clear
Monday

High: 44 °F
Sunny
Monday Night

Low: 33 °F
Partly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 45. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph.
Friday
Cloudy, with a high near 48. Breezy, with a west wind 16 to 21 mph becoming light and variable in the afternoon. Winds could gust as high as 33 mph.
Friday Night
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming east northeast around 5 mph after midnight.
Saturday
A 30 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 43. West northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 21. West northwest wind 11 to 18 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 32. West northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 23. West wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 17 mph.
Monday
Sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Mostly cloudy, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Partly sunny, with a high near 33.
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)
2:52 am CST Jan 9, 2026
2am CST Jan 9, 2026-6pm CST Jan 15, 2026



