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

68°F

20°C

Humidity 73%
Wind Speed Calm
Barometer 30.12 in (1019.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 7 Sep 9:53 pm CDT
Extended Forecast for

4 Miles S Charleston IL

  • Tonight

    Tonight: Mostly clear, with a low around 61. East wind 3 to 5 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. Light and variable wind becoming south around 6 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 16 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 95. West southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 67 °F

    Showers

  • Thursday

    Thursday: Showers likely before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north northwest around 5 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. Light northeast wind.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 61. East wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 91. Light and variable wind becoming south around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 70. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 16 mph.
Wednesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 95. West southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday Night
Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday
Showers likely before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north northwest around 5 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Partly cloudy, with a low around 59. Light northeast wind.
Friday
Sunny, with a high near 83.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63.
Saturday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 63.
Monday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Charleston IL
 39.41°N 88.16°W (Elev. 600 ft)
Last Update:
10:36 pm CDT Sep 7, 2026
Forecast Valid:
10pm CDT Sep 7, 2026-6pm CDT Sep 14, 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