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

91°F

33°C

Humidity 54%
Wind Speed SW 12 G 17 mph
Barometer 30.05 in (1016.8 mb)
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Heat Index99°F (37°C)
Last update 2 Sep 10:53 am CDT
Extended Forecast for

4 Miles NNW Ashmore IL

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

    NOW until 7:00pm Fri

    Extreme Heat Warning

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. South southwest wind around 6 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96. Heat index values as high as 102. West southwest wind 6 to 8 mph.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South wind 3 to 5 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 95. West wind 3 to 5 mph.

    High: 95 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92. Light north northwest wind.

    High: 92 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 101. West southwest wind around 9 mph, with gusts as high as 16 mph.
Tonight
Mostly clear, with a low around 75. South southwest wind around 6 mph.
Thursday
Sunny and hot, with a high near 96. Heat index values as high as 102. West southwest wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 75. South wind 3 to 5 mph.
Friday
Sunny and hot, with a high near 95. West wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 73. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92. Light north northwest wind.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 65.
Labor Day
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Ashmore IL
 39.59°N 88.04°W (Elev. 650 ft)
Last Update:
11:16 am CDT Sep 2, 2026
Forecast Valid:
11am CDT Sep 2, 2026-6pm CDT Sep 8, 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