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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

86°F

30°C

Humidity 63%
Wind Speed SE 10 mph
Barometer 30.08 in (1017.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 29 Jul 10:53 am CDT
Extended Forecast for

Casey IL

Heat Advisory July 29, 12:00pm until July 29, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 93. Heat index values as high as 101. North wind 3 to 6 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. Light and variable wind.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Northeast wind 3 to 6 mph.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Northeast wind around 6 mph.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 78. North northeast wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63. North northeast wind 10 to 13 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 78. North northeast wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 101. North wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 74. Light and variable wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Northeast wind 3 to 6 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Northeast wind around 6 mph.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 78. North northeast wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 63. North northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 78. North northeast wind 10 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Casey IL
 39.3°N 88°W (Elev. 643 ft)
Last Update:
10:41 am CDT Jul 29, 2025
Forecast Valid:
11am CDT Jul 29, 2025-6pm CDT Aug 4, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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