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

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

72°F

22°C

Humidity 97%
Wind Speed SE 5 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 12 Aug 10:53 pm CDT
Extended Forecast for

Mattoon IL

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 70. East wind 3 to 5 mph.

    Low: 70 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly between 9am and 10am. Partly sunny, with a high near 87. East wind 5 to 7 mph.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71. East southeast wind 6 to 8 mph.

    Low: 71 °F

    Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 89. Heat index values as high as 102. East wind around 6 mph.

    High: 89 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. East wind around 6 mph.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 90. South southeast wind around 7 mph becoming southwest in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. South wind around 6 mph.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 70. East wind 3 to 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly between 9am and 10am. Partly sunny, with a high near 87. East wind 5 to 7 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71. East southeast wind 6 to 8 mph.
Friday
Partly sunny, with a high near 89. Heat index values as high as 102. East wind around 6 mph.
Friday Night
Partly cloudy, with a low around 72. East wind around 6 mph.
Saturday
Mostly sunny, with a high near 90. South southeast wind around 7 mph becoming southwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 73. South wind around 6 mph.
Sunday
Sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.36°W (Elev. 722 ft)
Last Update:
10:36 pm CDT Aug 12, 2026
Forecast Valid:
11pm CDT Aug 12, 2026-6pm CDT Aug 19, 2026
 
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