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

29°F

-2°C

Humidity 69%
Wind Speed S 12 mph
Barometer 30.27 in (1026.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 12 Jan 8:53 am CST
Extended Forecast for

Charleston IL

  • Today

    Today: Mostly sunny, with a high near 46. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 32. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 53. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 53 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. West southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain showers after noon, mixing with snow after 3pm. Mostly cloudy, with a temperature rising to near 38 by 8am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 30%.

    High: 38 °F⇓

    Mostly Cloudy
    then Chance
    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 15. Blustery, with a north northwest wind 16 to 22 mph, with gusts as high as 34 mph.

    Low: 15 °F

    Mostly Cloudy
    and Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 28. North northwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Today
Mostly sunny, with a high near 46. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 32. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday
Increasing clouds, with a high near 53. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 36. West southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Wednesday
A chance of rain showers after noon, mixing with snow after 3pm. Mostly cloudy, with a temperature rising to near 38 by 8am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 15. Blustery, with a north northwest wind 16 to 22 mph, with gusts as high as 34 mph.
Thursday
Mostly sunny, with a high near 28. North northwest wind 7 to 14 mph, with gusts as high as 23 mph.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 37.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Charleston IL
 39.5°N 88.19°W (Elev. 650 ft)
Last Update:
9:12 am CST Jan 12, 2026
Forecast Valid:
9am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation