Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Thunderstorm in Vicinity Heavy Rain Fog/Mist and Windy
45°F
7°C
| Humidity | 90% |
| Wind Speed | N 33 G 44 mph |
| Barometer | 30.01 in (1016.1 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 3.00 mi |
| Wind Chill | 35°F (2°C) |
| Last update | 27 Mar 12:53 am CDT |
Extended Forecast for
Sullivan IL
Overnight

Low: 34 °F
Rain and
BreezyFriday
High: 48 °F
Chance Rain
and Breezy
then Mostly
SunnyFriday Night

Low: 27 °F
Mostly Clear
Saturday

High: 50 °F
Sunny
Saturday Night

Low: 39 °F
Increasing
CloudsSunday

High: 62 °F
Mostly Cloudy
Sunday Night

Low: 51 °F
Mostly Cloudy
Monday

High: 76 °F
Partly Sunny
Monday Night

Low: 61 °F
Chance
T-storms
Detailed Forecast
Overnight
Rain and possibly a thunderstorm before 4am, then rain likely. Low around 34. Breezy, with a north northeast wind 21 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of rain, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 48. Breezy, with a north wind 17 to 20 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 27. North northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 50. North wind 5 to 9 mph becoming south in the afternoon.
Saturday Night
Increasing clouds, with a low around 39. South wind 8 to 11 mph, with gusts as high as 17 mph.
Sunday
Mostly cloudy, with a high near 62. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 51. South wind around 11 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 76.
Monday Night
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 61.
Tuesday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 80. Breezy.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 59.
Wednesday
A chance of rain and thunderstorms. Mostly cloudy, with a high near 74. Breezy.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 51.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 63.
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)
12:17 am CDT Mar 27, 2026
1am CDT Mar 27, 2026-6pm CDT Apr 2, 2026



