Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
77°F
25°C
| Humidity | 54% |
| Wind Speed | Calm |
| Barometer | 30.13 in (1020.0 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 29 Sep 6:53 pm CDT |
Extended Forecast for
Sullivan IL
Tonight
Low: 59 °F
Mostly Clear
Tuesday
High: 89 °F
Sunny
Tuesday Night
Low: 54 °F
Partly Cloudy
Wednesday
High: 86 °F
Partly Sunny
Wednesday Night
Low: 56 °F
Mostly Cloudy
Thursday
High: 85 °F
Mostly Sunny
Thursday Night
Low: 56 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 57 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 59. East northeast wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 89. Northeast wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 54. East northeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 86. East wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 56. East wind around 6 mph.
Thursday
Mostly sunny, with a high near 85. Southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 56. Southeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 87.
Friday Night
Clear, with a low around 57.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sullivan IL
39.61°N 88.61°W (Elev. 669 ft)
39.61°N 88.61°W (Elev. 669 ft)
6:40 pm CDT Sep 29, 2025
7pm CDT Sep 29, 2025-6pm CDT Oct 6, 2025
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