National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

A Few Clouds

25°F

-4°C

Humidity 46%
Wind Speed S 15 mph
Barometer 30.23 in (1024.8 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 20 Jan 7:53 pm CST
Extended Forecast for

Charleston IL

  • Tonight

    Tonight: Increasing clouds, with a low around 23. South wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 40. West wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 40 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 21. West southwest wind 8 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: 21 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 31. Northwest wind 5 to 8 mph, with gusts as high as 15 mph.

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Light northwest wind becoming north northwest 8 to 13 mph in the evening. Winds could gust as high as 22 mph.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 10. North wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 10 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. North northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 13.

    High: 13 °F

    Cloudy then
    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 7.

    Low: 7 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 23. South wind 13 to 15 mph, with gusts as high as 25 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 40. West wind 10 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 21. West southwest wind 8 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Thursday
Partly sunny, with a high near 31. Northwest wind 5 to 8 mph, with gusts as high as 15 mph.
Thursday Night
Mostly cloudy, with a low around 5. Light northwest wind becoming north northwest 8 to 13 mph in the evening. Winds could gust as high as 22 mph.
Friday
Partly sunny and cold, with a high near 10. North wind 11 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around -1. North northeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 13.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 7.
Sunday
Partly sunny, with a high near 19.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Mostly sunny, with a high near 20.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Mostly sunny, with a high near 28.
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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:
7:32 pm CST Jan 20, 2026
Forecast Valid:
8pm CST Jan 20, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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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