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.

Overcast

62°F

17°C

Humidity 58%
Wind Speed E 7 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 22 May 12:53 am CDT
Extended Forecast for

Mattoon IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. East northeast wind around 9 mph, with gusts as high as 17 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 66. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Cloudy, with a low around 58. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 75. North wind around 7 mph becoming west in the afternoon.

    High: 75 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 78. Light and variable wind becoming south southeast around 5 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. Light northeast wind.

    Low: 59 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. East northeast wind around 9 mph, with gusts as high as 17 mph.
Friday
A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 66. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Friday Night
A 50 percent chance of showers. Cloudy, with a low around 58. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly cloudy, with a high near 75. North wind around 7 mph becoming west in the afternoon.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 60. Light south wind.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 78. Light and variable wind becoming south southeast around 5 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly cloudy, with a low around 59. Light northeast wind.
Memorial Day
Partly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 62.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.36°W (Elev. 722 ft)
Last Update:
1:31 am CDT May 22, 2026
Forecast Valid:
1am CDT May 22, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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