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

88°F

31°C

Humidity 70%
Wind Speed S 3 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 3 Sep 6:53 pm CDT
Extended Forecast for

4 Miles N Arcola IL

Extreme Heat Warning September 3, 07:37pm until September 4, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 3, 07:37pm until September 4, 07:00pm

    NOW until 7:00pm Fri

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Heat index values as high as 104. Southwest wind 5 to 7 mph becoming west northwest in the afternoon.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.

    Low: 73 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. East northeast wind around 7 mph.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. East northeast wind 7 to 11 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 10 mph, with gusts as high as 16 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 74. South wind 3 to 5 mph.
Friday
Sunny and hot, with a high near 98. Heat index values as high as 104. Southwest wind 5 to 7 mph becoming west northwest in the afternoon.
Friday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 67. East northeast wind around 7 mph.
Sunday
Sunny, with a high near 86. East northeast wind 7 to 11 mph, with gusts as high as 16 mph.
Sunday Night
Mostly clear, with a low around 61. East northeast wind 6 to 10 mph, with gusts as high as 16 mph.
Labor Day
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Arcola IL
 39.73°N 88.29°W (Elev. 646 ft)
Last Update:
6:36 pm CDT Sep 3, 2026
Forecast Valid:
7pm CDT Sep 3, 2026-6pm CDT Sep 10, 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