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

30°F

-1°C

Humidity 88%
Wind Speed NW 9 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 11 Feb 2:53 am CST
Extended Forecast for

Charleston IL

  • Overnight

    Overnight: Mostly clear, with a low around 26. North northwest wind around 9 mph, with gusts as high as 17 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 45. Light south wind.

    High: 45 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 49. Calm wind becoming south around 6 mph.

    High: 49 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. Light south wind.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 26. North northwest wind around 9 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 45. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 45. Light south wind.
Thursday Night
Mostly cloudy, with a low around 27. Calm wind.
Friday
Partly sunny, then gradually becoming sunny, with a high near 49. Calm wind becoming south around 6 mph.
Friday Night
Partly cloudy, with a low around 31. Light south wind.
Saturday
Partly sunny, with a high near 51.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 35.
Washington's Birthday
Mostly cloudy, with a high near 55.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly cloudy, with a high near 59.
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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:
3:16 am CST Feb 11, 2026
Forecast Valid:
3am CST Feb 11, 2026-6pm CST Feb 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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