Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Light Rain Fog/Mist
43°F
6°C
| Humidity | 93% |
| Wind Speed | E 6 mph |
| Barometer | 29.98 in (1015.6 mb) |
| Dewpoint | 41°F (5°C) |
| Visibility | 5.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 14 Feb 3:53 pm CST |
Extended Forecast for
Sullivan IL
This Afternoon

High: 48 °F
Rain Likely
Tonight

Low: 41 °F
Rain and
Patchy FogSunday
High: 56 °F
Patchy Fog
then SunnySunday Night

Low: 35 °F
Mostly Clear
Washington's Birthday

High: 58 °F
Partly Sunny
Monday Night

Low: 41 °F
Mostly Cloudy
Tuesday

High: 60 °F
Mostly Cloudy
Tuesday Night
Low: 54 °F
Mostly Cloudy
then Mostly
Cloudy and
BreezyWednesday

High: 67 °F
Sunny and
Breezy
Detailed Forecast
This Afternoon
Rain likely. Cloudy, with a high near 48. South southeast wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 4am. Patchy fog after 4am. Low around 41. East wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 56. Northeast wind 7 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
Mostly clear, with a low around 35. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 58. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 60. South wind 8 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 54. Breezy.
Wednesday
Sunny, with a high near 67. Breezy.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
A chance of rain. Mostly sunny, with a high near 64.
Thursday Night
A chance of rain. Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 44.
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)
3:36 pm CST Feb 14, 2026
4pm CST Feb 14, 2026-6pm CST Feb 21, 2026


