Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
A Few Clouds
43°F
6°C
| Humidity | 97% |
| Wind Speed | SW 3 mph |
| Barometer | 29.99 in (1015.8 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 15 Feb 6:53 pm CST |
Extended Forecast for
Sullivan IL
Tonight
Low: 38 °F
Mostly Clear
then Patchy
FogWashington's Birthday
High: 59 °F
Areas Fog
then Partly
SunnyMonday Night

Low: 40 °F
Increasing
CloudsTuesday

High: 59 °F
Cloudy
Tuesday Night
Low: 54 °F
Breezy.
Cloudy then
Chance RainWednesday

High: 67 °F
Sunny and
BreezyWednesday Night

Low: 43 °F
Partly Cloudy
Thursday
High: 67 °F
Partly Sunny
then Chance
RainThursday Night
Low: 37 °F
Chance Rain
then Partly
Cloudy
Detailed Forecast
Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 38. Light and variable wind becoming southwest around 6 mph after midnight.
Washington's Birthday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 59. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Monday Night
Increasing clouds, with a low around 40. South wind around 8 mph, with gusts as high as 15 mph.
Tuesday
Cloudy, with a high near 59. South wind 8 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 54. Breezy, with a south wind 17 to 22 mph, with gusts as high as 33 mph.
Wednesday
Sunny, with a high near 67. Breezy, with a west southwest wind 13 to 20 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 43. West southwest wind 6 to 10 mph becoming southeast after midnight. Winds could gust as high as 16 mph.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 67.
Thursday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 50.
Friday Night
A chance of rain. Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Mostly sunny, with a high near 41.
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)
6:51 pm CST Feb 15, 2026
6pm CST Feb 15, 2026-6pm CST Feb 22, 2026



