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.

Overcast

37°F

3°C

Humidity 86%
Wind Speed NW 10 mph
Barometer 29.95 in (1014.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 1 Jan 1:53 am CST
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 22. North wind around 10 mph, with gusts as high as 17 mph.

    Low: 22 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 33. North northeast wind 5 to 10 mph becoming light and variable in the morning. Winds could gust as high as 15 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35. North northeast wind around 5 mph becoming calm.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. Northeast wind around 6 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 36. North northeast wind around 6 mph.

    High: 36 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20. Light north northwest wind.

    Low: 20 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. North wind around 10 mph, with gusts as high as 17 mph.
New Year's Day
Partly sunny, with a high near 33. North northeast wind 5 to 10 mph becoming light and variable in the morning. Winds could gust as high as 15 mph.
Thursday Night
Partly cloudy, with a low around 21. Calm wind becoming north northeast around 5 mph after midnight.
Friday
Partly sunny, with a high near 35. North northeast wind around 5 mph becoming calm.
Friday Night
Mostly cloudy, with a low around 23. Northeast wind around 6 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 36. North northeast wind around 6 mph.
Saturday Night
Mostly clear, with a low around 20. Light north northwest wind.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 52.
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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:
1:12 am CST Jan 1, 2026
Forecast Valid:
2am CST Jan 1, 2026-6pm CST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation