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

75°F

24°C

Humidity 58%
Wind Speed W 8 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Jun 10:53 am CDT
Extended Forecast for

Mattoon IL

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 79. Northwest wind around 7 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 81. West wind 3 to 6 mph.

    High: 81 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 63. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 63 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 78. Southeast wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 78 °F

    Showers
    Likely then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 63. South southwest wind 14 to 16 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 63 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 75. North northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 79. Northwest wind around 7 mph.
Tonight
Mostly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 81. West wind 3 to 6 mph.
Saturday Night
Increasing clouds, with a low around 63. Calm wind becoming east southeast around 5 mph after midnight.
Sunday
Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 78. Southeast wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 63. South southwest wind 14 to 16 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Monday
Partly sunny, with a high near 75. North northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.39°W (Elev. 732 ft)
Last Update:
8:06 am CDT Jun 19, 2026
Forecast Valid:
11am CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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