Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Rain Fog/Mist
43°F
6°C
| Humidity | 97% |
| Wind Speed | SE 8 mph |
| Barometer | 29.97 in (1015.2 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 3.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 14 Feb 6:53 pm CST |
Extended Forecast for
Sullivan IL
Tonight

Low: 41 °F
Rain and
Patchy FogSunday
High: 56 °F
Slight Chance
Rain and
Patchy Fog
then Mostly
SunnySunday Night

Low: 35 °F
Mostly Clear
Washington's Birthday

High: 58 °F
Partly Sunny
Monday Night

Low: 41 °F
Mostly Cloudy
Tuesday

High: 60 °F
Mostly Cloudy
Tuesday Night
Low: 54 °F
Mostly Cloudy
then Mostly
Cloudy and
BreezyWednesday

High: 67 °F
Sunny and
BreezyWednesday Night

Low: 42 °F
Mostly Clear
Detailed Forecast
Tonight
Rain, mainly before 3am. Patchy fog after 4am. Low around 41. Southeast wind 6 to 8 mph becoming northeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 20 percent chance of rain before 7am. Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 56. North northeast wind 5 to 8 mph becoming west northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 35. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 58. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 60. South wind 8 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 54. Breezy, with a south wind 15 to 20 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 67. Breezy.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 64.
Thursday Night
A chance of rain. Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Partly sunny, 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)
7:06 pm CST Feb 14, 2026
7pm CST Feb 14, 2026-6pm CST Feb 21, 2026


