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

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

62°F

17°C

Humidity 80%
Wind Speed Calm
Barometer 30.07 in (1017.9 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 24 May 9:53 pm CDT
Extended Forecast for

Mattoon IL

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 55. Light east northeast wind.

    Low: 55 °F

    Clear then
    Patchy Fog

  • Memorial Day

    Memorial Day: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. East wind 3 to 8 mph.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. East wind 3 to 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 80. East southeast wind around 6 mph.

    High: 80 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 64. East southeast wind 3 to 6 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 64. Northeast wind 3 to 5 mph.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 55. Light east northeast wind.
Memorial Day
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. East wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 58. East wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 80. East southeast wind around 6 mph.
Tuesday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 64. East southeast wind 3 to 6 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 64. Northeast wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 78.
Friday Night
A chance of showers. Mostly cloudy, with a low around 62.
Saturday
A chance of showers. Partly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.39°W (Elev. 732 ft)
Last Update:
7:51 pm CDT May 24, 2026
Forecast Valid:
10pm CDT May 24, 2026-6pm CDT May 31, 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