National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

68°F

20°C

Humidity 73%
Wind Speed Calm
Barometer 30.12 in (1019.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 7 Sep 9:53 pm CDT
Extended Forecast for

Mattoon/Charleston, Coles County Memorial Airport IL

  • Tonight

    Tonight: Mostly clear, with a low around 61. East wind 3 to 6 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 72. Light south southeast wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 18 mph.

    Low: 72 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 68. West wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 68 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. North northwest wind 3 to 6 mph.

    High: 80 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. Light north northeast wind.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 61. East wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 90. Light and variable wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 72. Light south southeast wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Wednesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday Night
Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 68. West wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday
A 50 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. North northwest wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 58. Light north northeast wind.
Friday
Sunny, with a high near 83.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64.
Saturday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 63.
Monday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Mattoon/Charleston, Coles County Memorial Airport IL
 39.49°N 88.27°W (Elev. 696 ft)
Last Update:
10:36 pm CDT Sep 7, 2026
Forecast Valid:
10pm CDT Sep 7, 2026-6pm CDT Sep 14, 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