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.

Fair

21°F

-6°C

Humidity 62%
Wind Speed E 7 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 9 Feb 2:53 am CST
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: Partly cloudy, with a low around 20. East wind around 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42. East wind around 5 mph becoming light and variable.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. South southeast wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. North northwest wind 5 to 7 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. North northwest wind 3 to 7 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Light and variable wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Cloudy, with a low around 28.

    Low: 28 °F

    Chance Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. East wind around 6 mph.
Monday
Mostly sunny, with a high near 42. East wind around 5 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 34. South southeast wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 51. West southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 27. North northwest wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 42. North northwest wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 27. Light and variable wind.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
A 30 percent chance of snow. Cloudy, with a low around 28.
Friday
Mostly cloudy, with a high near 41.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 26.
Saturday
A chance of rain. Cloudy, with a high near 42.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 31.
Sunday
A chance of rain. Mostly sunny, with a high near 44.
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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:
1:16 am CST Feb 9, 2026
Forecast Valid:
3am CST Feb 9, 2026-6pm CST Feb 15, 2026
 
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