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

40°F

4°C

Humidity 65%
Wind Speed Calm
Barometer 30.37 in (1028.8 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 28 Mar 11:53 pm CDT
Extended Forecast for

Mattoon/Charleston, Coles County Memorial Airport IL

  • Overnight

    Overnight: Increasing clouds, with a low around 38. South wind around 9 mph, with gusts as high as 17 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 64. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53. South southwest wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 76. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 31 mph.

    High: 76 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. South southwest wind 16 to 18 mph, with gusts as high as 32 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Breezy, with a south southwest wind 18 to 23 mph, with gusts as high as 37 mph.

    High: 79 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 43. Southwest wind 15 to 18 mph becoming north after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Overnight
Increasing clouds, with a low around 38. South wind around 9 mph, with gusts as high as 17 mph.
Sunday
Mostly sunny, with a high near 64. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 53. South southwest wind 10 to 13 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 76. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 31 mph.
Monday Night
Partly cloudy, with a low around 63. South southwest wind 16 to 18 mph, with gusts as high as 32 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Breezy, with a south southwest wind 18 to 23 mph, with gusts as high as 37 mph.
Tuesday Night
Showers and possibly a thunderstorm. Low around 43. Southwest wind 15 to 18 mph becoming north after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 51.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 39.
Thursday
Showers likely. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 42.
Friday
A chance of showers. Mostly cloudy, with a high near 66.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51.
Saturday
Showers likely. Mostly cloudy, with a high near 67. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mattoon/Charleston, Coles County Memorial Airport IL
 39.46°N 88.28°W (Elev. 679 ft)
Last Update:
11:56 pm CDT Mar 28, 2026
Forecast Valid:
12am CDT Mar 29, 2026-6pm CDT Apr 4, 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