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

46°F

8°C

Humidity 51%
Wind Speed W 8 mph
Barometer 29.99 in (1016.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Mar 6:53 pm CDT
Extended Forecast for

Charleston IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. West northwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 53. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 53 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely after 1pm. Mostly cloudy, with a high near 68. Windy, with a south wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Mostly Cloudy
    and Breezy
    then Showers
    Likely and
    Windy

  • Sunday Night

    Sunday Night: Rain before 1am, then snow likely. Low around 23. Breezy, with a south wind 21 to 23 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 50 percent chance of snow. Cloudy, with a high near 27. Blustery, with a west northwest wind 24 to 26 mph, with gusts as high as 41 mph.

    High: 27 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Blustery, with a west northwest wind 15 to 22 mph, with gusts as high as 33 mph.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. West northwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Saturday
Partly sunny, with a high near 53. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday
Showers likely after 1pm. Mostly cloudy, with a high near 68. Windy, with a south wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 1am, then snow likely. Low around 23. Breezy, with a south wind 21 to 23 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday
A 50 percent chance of snow. Cloudy, with a high near 27. Blustery, with a west northwest wind 24 to 26 mph, with gusts as high as 41 mph.
Monday Night
Mostly cloudy, with a low around 11. Blustery, with a west northwest wind 15 to 22 mph, with gusts as high as 33 mph.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Partly sunny, with a high near 60.
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:
6:36 pm CDT Mar 13, 2026
Forecast Valid:
7pm CDT Mar 13, 2026-6pm CDT Mar 20, 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