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.

Mostly Cloudy

77°F

25°C

Humidity 69%
Wind Speed NE 15 mph
Barometer 30.13 in (1019.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Aug 8:53 am CDT
Extended Forecast for

2 Miles NNE Greenup IL

Heat Advisory August 17, 09:57am until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 09:57am until August 17, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Today

    High: 92 °F

    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 92. Heat index values as high as 101. East southeast wind around 5 mph becoming calm in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

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

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Light and variable wind becoming west southwest around 6 mph in the morning. Chance of precipitation is 30%.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 71. Light north northwest wind.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 85. North wind 5 to 8 mph.

    High: 85 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Today
A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Light and variable wind. Chance of precipitation is 40%.
Tonight
Partly cloudy, with a low around 74. Light and variable wind.
Monday
Sunny, with a high near 92. Heat index values as high as 101. East southeast wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 73. Calm wind.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Light and variable wind becoming west southwest around 6 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 71. Light north northwest wind.
Wednesday
Partly sunny, with a high near 85. North wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Greenup IL
 39.28°N 88.14°W (Elev. 561 ft)
Last Update:
9:12 am CDT Aug 17, 2025
Forecast Valid:
9am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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