


Hazardous Weather Conditions
Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
A Few Clouds
21°C
70°F
Humidity | 97% |
Wind Speed | Calm |
Barometer | 1016.9 mb (30.05 in) |
Dewpoint | 21°C (69°F) |
Visibility | 16 km |
Last update | 13 Jul 10:53 pm CDT |
Extended Forecast for
Sullivan IL
Tonight
Low: 20 °C
Patchy Dense
FogMonday
High: 29 °C
Areas Dense
Fog then
Mostly SunnyMonday Night
Low: 21 °C
Partly Cloudy
Tuesday
High: 31 °C
Partly Sunny
then Chance
T-stormsTuesday Night
Low: 22 °C
Mostly Cloudy
Wednesday
High: 31 °C
Chance
T-stormsWednesday Night
Low: 22 °C
Chance
T-stormsThursday
High: 31 °C
Mostly Sunny
then Chance
T-stormsThursday Night
Low: 21 °C
Chance
T-storms
Detailed Forecast
Tonight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 20. Calm wind.
Monday
Areas of dense fog before 8am. Otherwise, mostly sunny, with a high near 29. Calm wind.
Monday Night
Partly cloudy, with a low around 21. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the morning.
Tuesday Night
Mostly cloudy, with a low around 22. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31. South southwest wind 8 to 11 km/h.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 22. South southwest wind around 10 km/h.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31.
Thursday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 21.
Friday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 30.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Sullivan IL
39.59°N 88.61°W (Elev. 669 m)
39.59°N 88.61°W (Elev. 669 m)
10:41 pm CDT Jul 13, 2025
11pm CDT Jul 13, 2025-6pm CDT Jul 20, 2025