Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Overcast
21°F
-6°C
| Humidity | 92% |
| Wind Speed | NW 17 mph |
| Barometer | 30.01 in (1017.2 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 7°F (-14°C) |
| Last update | 2 Dec 4:53 am CST |
Extended Forecast for
Sullivan IL
Today

High: 23 °F
Mostly Cloudy
Tonight

Low: 15 °F
Mostly Cloudy
Wednesday

High: 34 °F
Mostly Cloudy
Wednesday Night

Low: 5 °F
Mostly Cloudy
Thursday

High: 14 °F
Sunny
Thursday Night

Low: 1 °F
Partly Cloudy
Friday

High: 28 °F
Mostly Sunny
Friday Night

Low: 16 °F
Mostly Cloudy
Saturday

High: 29 °F
Partly Sunny
Detailed Forecast
Today
Mostly cloudy, with a high near 23. Northwest wind 5 to 7 mph becoming southwest in the afternoon.
Tonight
Mostly cloudy, with a low around 15. Wind chill values between 5 and 10. South wind 5 to 9 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy, with a high near 34. South southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly cloudy, with a low around 5. Wind chill values between -5 and zero. West wind 6 to 10 mph becoming north northwest in the evening. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 14. North northwest wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 1. Calm wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 28. South wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 8.
Monday
Partly sunny, with a high near 29.
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)
3:44 am CST Dec 2, 2025
5am CST Dec 2, 2025-6pm CST Dec 8, 2025


