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.

Fog/Mist

45°F

7°C

Humidity 93%
Wind Speed Calm
Barometer 29.74 in (1007.4 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Last update 6 Jan 5:53 pm CST
Extended Forecast for

Charleston IL

  • Tonight

    Tonight: Increasing clouds, with a low around 35. West northwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 18 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 52. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 52 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 40. South wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Showers, mainly after noon. High near 62. South southeast wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 52. South southwest wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 56. West southwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 40. Northeast wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Partly sunny, with a high near 47.

    High: 47 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 35. West northwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 18 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 52. Light and variable wind becoming south 5 to 8 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 40. South wind 7 to 9 mph, with gusts as high as 18 mph.
Thursday
Showers, mainly after noon. High near 62. South southeast wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 52. South southwest wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Mostly cloudy, with a high near 56. West southwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40. Northeast wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 16 mph.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.48°N 88.19°W (Elev. 650 ft)
Last Update:
5:36 pm CST Jan 6, 2026
Forecast Valid:
6pm CST Jan 6, 2026-6pm CST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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