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

76°F

24°C

Humidity 91%
Wind Speed S 6 mph
Barometer 30.03 in (1016.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 16 Aug 6:53 am CDT
Extended Forecast for

Mattoon/Charleston, Coles County Memorial Airport IL

  • Today

    Today: Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 87. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 87 °F

    T-storms
    Likely

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 83. North northwest wind 6 to 9 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Light west southwest wind.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 1am. Partly cloudy, with a low around 67. Light south wind.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers before 1pm. Partly sunny, with a high near 82. West wind 3 to 7 mph.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 87. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northwest wind 3 to 7 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 83. North northwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85. Light west southwest wind.
Tuesday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 67. Light south wind.
Wednesday
A 50 percent chance of showers before 1pm. Partly sunny, with a high near 82. West wind 3 to 7 mph.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Mattoon/Charleston, Coles County Memorial Airport IL
 39.51°N 88.27°W (Elev. 656 ft)
Last Update:
6:36 am CDT Aug 16, 2026
Forecast Valid:
7am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation