News Headlines
Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
79°F
26°C
| Humidity | 52% |
| Wind Speed | SW 14 G 31 mph |
| Barometer | 29.79 in (1008.3 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 26 Mar 11:53 am CDT |
Extended Forecast for
Sullivan IL
This Afternoon
High: 84 °F
Sunny and
BreezyTonight
Low: 35 °F
T-storms and
BreezyFriday
High: 47 °F
Decreasing
CloudsFriday Night
Low: 28 °F
Mostly Clear
Saturday
High: 51 °F
Sunny
Saturday Night
Low: 37 °F
Partly Cloudy
Sunday
High: 60 °F
Partly Sunny
Sunday Night
Low: 51 °F
Mostly Cloudy
Monday
High: 75 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 84. Breezy, with a southwest wind 18 to 21 mph, with gusts as high as 33 mph.
Tonight
Showers and thunderstorms before 4am, then a chance of showers. Low around 35. Breezy, with a southwest wind 14 to 23 mph becoming north northeast in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 47. North wind 15 to 18 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 28. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 51. North wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
Partly cloudy, with a low around 37. South southeast wind 6 to 9 mph, with gusts as high as 16 mph.
Sunday
Partly sunny, with a high near 60. South southeast wind 9 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 75.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 58.
Tuesday
A chance of rain. Partly sunny, with a high near 77.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 60.
Wednesday
A chance of rain. Mostly cloudy, with a high near 76. Breezy.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sullivan IL
39.59°N 88.61°W (Elev. 669 ft)
39.59°N 88.61°W (Elev. 669 ft)
12:11 pm CDT Mar 26, 2026
12pm CDT Mar 26, 2026-6pm CDT Apr 1, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
