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Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

84°F

29°C

Humidity 77%
Wind Speed S 5 mph
Barometer 30.07 in (1017.4 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 2 Jul 8:53 pm CDT
Extended Forecast for

Mattoon/Charleston, Coles County Memorial Airport IL

Extreme Heat Warning July 2, 08:59pm until July 3, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 2, 08:59pm until July 3, 07:00pm

    NOW until 7:00pm Fri

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Heat index values as high as 102. South southwest wind 6 to 9 mph, with gusts as high as 16 mph.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. South southwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southwest wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. West wind 5 to 7 mph.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 74. South southwest wind around 7 mph.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Heat index values as high as 102. South southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.
Independence Day
Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. South southwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southwest wind 3 to 5 mph. Chance of precipitation is 40%.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. West wind 5 to 7 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
A chance of showers. Mostly sunny, with a high near 86.
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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:
8:21 pm CDT Jul 2, 2026
Forecast Valid:
8pm CDT Jul 2, 2026-6pm CDT Jul 9, 2026
 
Forecast Discussion
 
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