National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast

27°F

-3°C

Humidity 66%
Wind Speed S 14 G 20 mph
Barometer 30.16 in (1022.1 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 18 Mar 12:53 am CDT
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: A 50 percent chance of snow. Cloudy, with a low around 25. South southeast wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 25 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before 8am. Cloudy through mid morning, then gradual clearing, with a high near 53. South southeast wind 10 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.

    High: 53 °F

    Slight Chance
    Snow then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37. South wind 3 to 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63. East southeast wind 5 to 8 mph.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. East northeast wind around 6 mph becoming south southeast after midnight.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 71. West southwest wind 5 to 11 mph, with gusts as high as 17 mph.

    High: 71 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. West southwest wind around 7 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of snow. Cloudy, with a low around 25. South southeast wind 8 to 11 mph, with gusts as high as 23 mph.
Wednesday
A 20 percent chance of snow before 8am. Cloudy through mid morning, then gradual clearing, with a high near 53. South southeast wind 10 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
Mostly cloudy, with a low around 37. South wind 3 to 5 mph.
Thursday
Partly sunny, with a high near 63. East southeast wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 43. East northeast wind around 6 mph becoming south southeast after midnight.
Friday
Partly sunny, with a high near 71. West southwest wind 5 to 11 mph, with gusts as high as 17 mph.
Friday Night
Mostly cloudy, with a low around 49. West southwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Mostly sunny, with a high near 53.
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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:
12:56 am CDT Mar 18, 2026
Forecast Valid:
1am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation