Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Rain Fog/Mist
58°F
14°C
| Humidity | 97% |
| Wind Speed | S 10 G 21 mph |
| Barometer | 29.89 in (1011.8 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 3.00 mi |
| Last update | 7 Mar 7:53 am CST |
Extended Forecast for
Sullivan IL
Today
High: 64 °F⇓
Showers then
Chance
ShowersTonight

Low: 35 °F
Decreasing
CloudsSunday

High: 61 °F
Sunny
Sunday Night

Low: 44 °F
Clear
Monday

High: 72 °F
Sunny
Monday Night

Low: 56 °F
Mostly Clear
Tuesday
High: 75 °F
Partly Sunny
then Showers
LikelyTuesday Night

Low: 50 °F
Showers and
BreezyWednesday
High: 61 °F
Breezy.
Showers then
Chance
Showers
Detailed Forecast
Today
Showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 3pm. Temperature rising to near 64 by 11am, then falling to around 49 during the remainder of the day. South wind 15 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 61. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 44. South southwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 72. South southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 56. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 75. South southwest wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 50. Breezy. Chance of precipitation is 90%.
Wednesday
Showers, mainly before noon. High near 61. Breezy. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 59. Breezy.
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)
7:57 am CST Mar 7, 2026
8am CST Mar 7, 2026-6pm CDT Mar 13, 2026


