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 88%
Wind Speed NW 5 mph
Barometer 30.12 in (1020.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 21 Feb 4:53 am CST
Extended Forecast for

Charleston IL

  • Today

    Today: A chance of flurries, mixing with sprinkles after 1pm, then gradually ending. Increasing clouds, with a high near 37. West northwest wind 7 to 13 mph, with gusts as high as 17 mph.

    High: 37 °F

    Partly Sunny
    then Chance
    Sprinkles/Flurries

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Northwest wind 9 to 17 mph, with gusts as high as 26 mph.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 30. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 33 mph.

    High: 30 °F

    Mostly Cloudy
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17. Wind chill values between 3 and 13. Northwest wind around 16 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 31. North northwest wind 8 to 17 mph, with gusts as high as 28 mph.

    High: 31 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. North northwest wind around 6 mph becoming calm.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 44 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

Today
A chance of flurries, mixing with sprinkles after 1pm, then gradually ending. Increasing clouds, with a high near 37. West northwest wind 7 to 13 mph, with gusts as high as 17 mph.
Tonight
Mostly cloudy, with a low around 21. Northwest wind 9 to 17 mph, with gusts as high as 26 mph.
Sunday
Mostly cloudy, with a high near 30. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 33 mph.
Sunday Night
Mostly cloudy, with a low around 17. Wind chill values between 3 and 13. Northwest wind around 16 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 31. North northwest wind 8 to 17 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 18. North northwest wind around 6 mph becoming calm.
Tuesday
Partly sunny, with a high near 44. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
5:36 am CST Feb 21, 2026
Forecast Valid:
5am CST Feb 21, 2026-6pm CST Feb 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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