Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
30°F
-1°C
| Humidity | 66% |
| Wind Speed | E 8 mph |
| Barometer | 30.36 in (1028.5 mb) |
| Dewpoint | 20°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 22°F (-6°C) |
| Last update | 24 Mar 5:53 am CDT |
Extended Forecast for
Sullivan IL
Today

High: 59 °F
Mostly Sunny
Tonight

Low: 40 °F
Mostly Cloudy
Wednesday

High: 71 °F
Partly Sunny
Wednesday Night

Low: 57 °F
Partly Cloudy
Thursday

High: 84 °F
Mostly Sunny
Thursday Night

Low: 38 °F
T-storms
Friday

High: 47 °F
Partly Sunny
Friday Night

Low: 27 °F
Mostly Clear
Saturday

High: 52 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 59. South southeast wind 6 to 9 mph.
Tonight
Mostly cloudy, with a low around 40. South southeast wind around 7 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 71. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 57. South wind 9 to 13 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 84. Southwest wind 13 to 18 mph, with gusts as high as 29 mph.
Thursday Night
Showers and thunderstorms before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then rain and possibly a thunderstorm after 1am. Low around 38. West southwest wind 13 to 18 mph becoming north northeast after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Partly sunny, with a high near 47. North wind 15 to 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 72.
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)
6:26 am CDT Mar 24, 2026
6am CDT Mar 24, 2026-6pm CDT Mar 30, 2026


