Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Overcast
32°F
0°C
| Humidity | 96% |
| Wind Speed | E 9 mph |
| Barometer | 29.89 in (1012.7 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 8.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 26 Feb 7:53 am CST |
Extended Forecast for
Sullivan IL
Today

High: 50 °F
Decreasing
CloudsTonight

Low: 32 °F
Mostly Clear
Friday
High: 64 °F
Sunny then
Sunny and
BreezyFriday Night

Low: 35 °F
Mostly Clear
Saturday

High: 54 °F
Partly Sunny
Saturday Night

Low: 25 °F
Mostly Cloudy
Sunday
High: 36 °F
Mostly Cloudy
then Chance
SnowSunday Night

Low: 22 °F
Rain/Snow
LikelyMonday

High: 34 °F
Mostly Cloudy
Detailed Forecast
Today
Mostly cloudy, then gradually becoming sunny, with a high near 50. East wind around 6 mph becoming light and variable.
Tonight
Mostly clear, with a low around 32. South southwest wind 3 to 8 mph. Winds could gust as high as 15 mph.
Friday
Sunny, with a high near 64. Breezy, with a south southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Friday Night
Mostly clear, with a low around 35. South southwest wind 7 to 13 mph becoming north northeast after midnight. Winds could gust as high as 22 mph.
Saturday
Partly sunny, with a high near 54. East northeast wind 7 to 11 mph, with gusts as high as 17 mph.
Saturday Night
Mostly cloudy, with a low around 25. North northeast wind 11 to 14 mph, with gusts as high as 23 mph.
Sunday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 36. Northeast wind around 14 mph, with gusts as high as 22 mph.
Sunday Night
Rain and snow likely, mainly before midnight. Cloudy, with a low around 22. Chance of precipitation is 60%.
Monday
Mostly cloudy, with a high near 34.
Monday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 22.
Tuesday
A chance of rain. Cloudy, with a high near 38.
Tuesday Night
A chance of rain. Cloudy, with a low around 27.
Wednesday
A chance of rain. Mostly cloudy, 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)
7:41 am CST Feb 26, 2026
8am CST Feb 26, 2026-6pm CST Mar 4, 2026


