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.

Mostly Cloudy

78°F

26°C

Humidity 79%
Wind Speed Calm
Barometer 30.11 in (1019.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jul 11:53 am CDT
Extended Forecast for

Charleston IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 84. East northeast wind 3 to 5 mph.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. Light east southeast wind.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 86. South wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 87. West wind around 6 mph becoming calm. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light and variable wind becoming east southeast around 5 mph after midnight.

    Low: 71 °F

    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind 5 to 7 mph.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 84. East northeast wind 3 to 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. Light east southeast wind.
Saturday
Showers and thunderstorms likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 86. South wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South southwest wind 5 to 7 mph.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 87. West wind around 6 mph becoming calm. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light and variable wind becoming east southeast around 5 mph after midnight.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind 5 to 7 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
11:41 am CDT Jul 18, 2025
Forecast Valid:
12pm CDT Jul 18, 2025-6pm CDT Jul 24, 2025
 
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