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

74°F

23°C

Humidity 57%
Wind Speed W 14 G 21 mph
Barometer 29.91 in (1012.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 Apr 1:53 pm CDT
Extended Forecast for

Charleston IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. West wind around 14 mph, with gusts as high as 23 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. West wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 81. South wind 5 to 15 mph, with gusts as high as 28 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 53. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Chance
    T-storms then
    T-storms

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Partly sunny, with a high near 62. West wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 37. West northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 58. West northwest wind 7 to 16 mph, with gusts as high as 29 mph.

    High: 58 °F

    Patchy Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: Patchy frost before 8am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Patchy Frost
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 78. West wind around 14 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 55. West wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 81. South wind 5 to 15 mph, with gusts as high as 28 mph.
Friday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 53. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, mainly before 1pm. Partly sunny, with a high near 62. West wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 37. West northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 58. West northwest wind 7 to 16 mph, with gusts as high as 29 mph.
Sunday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 75.
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:
1:26 pm CDT Apr 16, 2026
Forecast Valid:
2pm CDT Apr 16, 2026-6pm CDT Apr 22, 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