National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

76°F

24°C

Humidity 85%
Wind Speed S 8 mph
Barometer 30.09 in (1018.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 8 Aug 7:53 am CDT
Extended Forecast for

5 Miles SE Sullivan IL

  • Today

    Today: Sunny, with a high near 89. South wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. South southeast wind around 7 mph.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. South wind around 7 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 88. South wind 6 to 8 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. South southeast wind around 6 mph.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. South wind 5 to 7 mph.

    High: 89 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 89. South wind 7 to 10 mph, with gusts as high as 16 mph.
Tonight
Mostly clear, with a low around 72. South southeast wind around 7 mph.
Saturday
Sunny, with a high near 90. South wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 71. South wind around 7 mph.
Sunday
Mostly sunny, with a high near 88. South wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 70. South southeast wind around 6 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. South wind 5 to 7 mph.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 70.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Sullivan IL
 39.56°N 88.53°W (Elev. 650 ft)
Last Update:
8:40 am CDT Aug 8, 2025
Forecast Valid:
8am CDT Aug 8, 2025-6pm CDT Aug 14, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation