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

82°F

28°C

Humidity 60%
Wind Speed Vrbl 7 mph
Barometer 30.06 in (1017.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 20 Jun 12:53 pm CDT
Extended Forecast for

5 Miles ENE Janesville IL

Heat Advisory June 21, 12:00pm until June 24, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 86. South southwest wind around 11 mph, with gusts as high as 20 mph.

    High: 86 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. Heat index values as high as 101. South southwest wind 9 to 14 mph, with gusts as high as 30 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South southwest wind 7 to 10 mph, with gusts as high as 24 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 75. South wind 6 to 8 mph.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93. South southwest wind 5 to 7 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 86. South southwest wind around 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 92. Heat index values as high as 101. South southwest wind 9 to 14 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 76. South southwest wind 7 to 10 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 75. South wind 6 to 8 mph.
Monday
Sunny, with a high near 93. South southwest wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ENE Janesville IL
 39.39°N 88.17°W (Elev. 551 ft)
Last Update:
12:41 pm CDT Jun 20, 2025
Forecast Valid:
1pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation