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

32°F

0°C

Humidity 59%
Wind Speed E 10 mph
Barometer 30.40 in (1030.1 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 23 Mar 11:53 pm CDT
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 30. East wind around 6 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56. Southeast wind around 7 mph.

    High: 56 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South southeast wind around 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 69 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 38. Breezy, with a southwest wind 17 to 21 mph becoming north northeast after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 38 °F

    Showers and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 48. Breezy.

    High: 48 °F

    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 30. East wind around 6 mph.
Tuesday
Mostly sunny, with a high near 56. Southeast wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 83. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.
Thursday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 38. Breezy, with a southwest wind 17 to 21 mph becoming north northeast after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Mostly cloudy, with a high near 48. Breezy.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
11:46 pm CDT Mar 23, 2026
Forecast Valid:
12am CDT Mar 24, 2026-6pm CDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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