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Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
54°F
12°C
| Humidity | 40% |
| Wind Speed | E 3 mph |
| Barometer | 30.47 in (1032.1 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Last update | 17 Oct 5:53 pm CDT |
Extended Forecast for
Sullivan IL
Frost Advisory October 18, 01:00am until October 18, 09:00am
Tonight
Low: 33 °F
Clear then
Areas FrostSunday
High: 67 °F
Frost then
SunnySunday Night
Low: 36 °F
Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 38 °F
Mostly Clear
Tuesday
High: 74 °F
Sunny
Tuesday Night
Low: 41 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Wednesday Night
Low: 45 °F
Mostly Clear
Detailed Forecast
Tonight
Areas of frost after 2am. Otherwise, clear, with a low around 33. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 67. South wind 6 to 9 mph, with gusts as high as 15 mph.
Sunday Night
Clear, with a low around 36. South southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 72. Light southeast wind.
Monday Night
Mostly clear, with a low around 38. Calm wind.
Tuesday
Sunny, with a high near 74. Calm wind.
Tuesday Night
Mostly clear, with a low around 41. Calm wind.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 78.
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)
5:41 pm CDT Oct 17, 2026
6pm CDT Oct 17, 2026-6pm CDT Oct 24, 2026
Additional Resources
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