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 57%
Wind Speed N 10 mph
Barometer 29.88 in (1011.1 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 5 Sep 5:53 pm CDT
Extended Forecast for

6 Miles N Charleston IL

Extreme Heat Warning September 5, 06:36pm until September 5, 07:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning September 5, 06:36pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85. Northeast wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. East northeast wind 5 to 9 mph, with gusts as high as 15 mph.

    Low: 59 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 86. East wind 6 to 8 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East wind 5 to 7 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind 3 to 8 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. South wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. North northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 85. Northeast wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 59. East northeast wind 5 to 9 mph, with gusts as high as 15 mph.
Labor Day
Sunny, with a high near 86. East wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 62. East wind 5 to 7 mph.
Tuesday
Sunny, with a high near 93. South wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 71. South wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.
Thursday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Charleston IL
 39.57°N 88.18°W (Elev. 686 ft)
Last Update:
5:41 pm CDT Sep 5, 2026
Forecast Valid:
6pm CDT Sep 5, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation