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

83°F

28°C

Humidity 77%
Wind Speed Calm
Barometer 29.94 in (1012.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 4 Sep 8:53 pm CDT
Extended Forecast for

2 Miles ESE Mattoon IL

Extreme Heat Warning September 4, 08:58pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 08:58pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 96. Heat index values as high as 104. Light and variable wind becoming north northwest 5 to 9 mph in the morning.

    High: 96 °F

    Hot

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 68. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 86. Northeast wind 8 to 10 mph, with gusts as high as 16 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East northeast wind 6 to 9 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 87. East wind around 7 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. East northeast wind 5 to 7 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Light south southwest wind.
Saturday
Sunny and hot, with a high near 96. Heat index values as high as 104. Light and variable wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Increasing clouds, with a low around 68. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 86. Northeast wind 8 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Mostly clear, with a low around 61. East northeast wind 6 to 9 mph, with gusts as high as 15 mph.
Labor Day
Sunny, with a high near 87. East wind around 7 mph.
Monday Night
Mostly clear, with a low around 63. East northeast wind 5 to 7 mph.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Mattoon IL
 39.47°N 88.33°W (Elev. 705 ft)
Last Update:
7:36 pm CDT Sep 4, 2026
Forecast Valid:
8pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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