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

77°F

25°C

Humidity 35%
Wind Speed S 9 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Mar 1:53 pm CDT
Extended Forecast for

Mattoon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. South southwest wind around 9 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. South southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 80. Breezy, with a south southwest wind 11 to 21 mph becoming north in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Breezy, with a north wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 38 mph.

    Low: 33 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51. North wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34. East northeast wind around 6 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. South wind 6 to 8 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 80. South southwest wind around 9 mph.
Tonight
Mostly clear, with a low around 61. South southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday
A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 80. Breezy, with a south southwest wind 11 to 21 mph becoming north in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 33. Breezy, with a north wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 38 mph.
Monday
Mostly sunny, with a high near 51. North wind 9 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 34. East northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 59. South wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Mostly cloudy, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A chance of rain and thunderstorms. Partly cloudy, with a low around 40.
Friday
A chance of rain. Partly sunny, with a high near 51.
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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:
1:26 pm CDT Mar 21, 2026
Forecast Valid:
2pm CDT Mar 21, 2026-6pm CDT Mar 27, 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