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.

Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 70°F (21°C)
Visibility 3.00 mi
Last update 26 Jul 5:53 am CDT
Extended Forecast for

Mattoon IL

  • Today

    Today: Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 89. Heat index values as high as 102. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 89 °F

    Areas Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. West southwest wind around 6 mph becoming south after midnight.

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 92 °F

    Slight Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Southwest wind 8 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. North wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. North northeast wind 6 to 10 mph, with gusts as high as 17 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. North wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 89. Heat index values as high as 102. Light and variable wind becoming south 5 to 8 mph in the morning.
Tonight
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. West southwest wind around 6 mph becoming south after midnight.
Monday
A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 7 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 75. Southwest wind 8 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 89. North wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 64. North northeast wind 6 to 10 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 85. North wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 64.
Friday
A chance of showers. Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.39°W (Elev. 732 ft)
Last Update:
6:26 am CDT Jul 26, 2026
Forecast Valid:
6am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation