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Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

76°F

24°C

Humidity 30%
Wind Speed Calm
Barometer 30.12 in (1019.5 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 8 Oct 11:53 am CDT
Extended Forecast for

Charleston IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. Calm wind becoming west northwest around 6 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 85. Light south southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 57. South southeast wind around 7 mph.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 83. South wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 83 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. East southeast wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers before 1pm. Partly sunny, with a high near 74. East wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 16 mph.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 82. Calm wind becoming west northwest around 6 mph.
Tonight
Clear, with a low around 52. Light and variable wind.
Friday
Sunny, with a high near 85. Light south southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Friday Night
Clear, with a low around 57. South southeast wind around 7 mph.
Saturday
Increasing clouds, with a high near 83. South wind 6 to 9 mph, with gusts as high as 15 mph.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. East southeast wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 50 percent chance of showers before 1pm. Partly sunny, with a high near 74. East wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
Partly cloudy, with a low around 55.
Columbus Day
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
11:36 am CDT Oct 8, 2026
Forecast Valid:
12pm CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation