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Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fog/Mist
33°F
1°C
| Humidity | 92% |
| Wind Speed | N 16 G 31 mph |
| Barometer | 30.10 in (1020.0 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 5.00 mi |
| Wind Chill | 23°F (-5°C) |
| Last update | 7 Dec 2:53 pm CST |
Extended Forecast for
Sullivan IL
This Afternoon

High: 34 °F
Patchy Fog
Tonight

Low: 16 °F
Mostly Cloudy
Monday

High: 28 °F
Decreasing
CloudsMonday Night

Low: 18 °F
Partly Cloudy
Tuesday

High: 42 °F
Partly Sunny
Tuesday Night

Low: 35 °F
Mostly Cloudy
Wednesday

High: 42 °F
Mostly Cloudy
Wednesday Night

Low: 21 °F
Mostly Cloudy
Thursday

High: 30 °F
Chance Snow
Detailed Forecast
This Afternoon
Patchy fog before 4pm. Otherwise, cloudy, with a high near 34. North northeast wind around 11 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 16. North northeast wind 6 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 28. North northeast wind around 6 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 18. Light south wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Partly sunny, with a high near 42. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 35. South southwest wind 11 to 18 mph, with gusts as high as 30 mph.
Wednesday
Mostly cloudy, with a high near 42. West northwest wind 11 to 18 mph, with gusts as high as 32 mph.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
A 50 percent chance of snow. Mostly cloudy, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 22.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
Partly sunny, with a high near 13.
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)
3:16 pm CST Dec 7, 2025
3pm CST Dec 7, 2025-6pm CST Dec 13, 2025


