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

96°F

36°C

Humidity 44%
Wind Speed W 6 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 4 Sep 12:53 pm CDT
Extended Forecast for

4 Miles NNW Ashmore IL

Extreme Heat Warning September 4, 01:07pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 01:07pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 97 °F

    Hot

  • Tonight

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

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 96. Heat index values as high as 104. Calm 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 67. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 85. Northeast wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. East northeast wind 5 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 86. East wind 5 to 8 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 97. Heat index values as high as 105. West southwest wind around 7 mph.
Tonight
Mostly clear, with a low around 73. Calm wind.
Saturday
Sunny and hot, with a high near 96. Heat index values as high as 104. Calm wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Increasing clouds, with a low around 67. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 85. Northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Mostly clear, with a low around 60. East northeast wind 5 to 8 mph.
Labor Day
Sunny, with a high near 86. East wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 89.
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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:
1:01 pm CDT Sep 4, 2026
Forecast Valid:
1pm CDT Sep 4, 2026-6pm CDT Sep 10, 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