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

62°F

17°C

Humidity 73%
Wind Speed NE 5 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 20 May 8:53 pm CDT
Extended Forecast for

Mattoon/Charleston, Coles County Memorial Airport IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. North northeast wind around 11 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68. East wind around 13 mph, with gusts as high as 21 mph.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. East northeast wind around 11 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Showers, mainly after 1pm. High near 69. East wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 69 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. East wind around 9 mph becoming southwest after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 76. West southwest wind around 9 mph.

    High: 76 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 59. West southwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 77.

    High: 77 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. North northeast wind around 11 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 68. East wind around 13 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 54. East northeast wind around 11 mph, with gusts as high as 18 mph.
Friday
Showers, mainly after 1pm. High near 69. East wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. East wind around 9 mph becoming southwest after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly cloudy, with a high near 76. West southwest wind around 9 mph.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 59. West southwest wind around 5 mph becoming calm in the evening.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 77.
Sunday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 60.
Memorial Day
A 30 percent chance of showers. Mostly cloudy, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
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Forecast Area
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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:
7:36 pm CDT May 20, 2026
Forecast Valid:
9pm CDT May 20, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation