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.

Mostly Cloudy

31°F

-1°C

Humidity 61%
Wind Speed W 8 mph
Barometer 29.98 in (1016.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 31 Dec 2:53 am CST
Extended Forecast for

5 Miles S Sullivan IL

  • Overnight

    Overnight: Partly cloudy, with a low around 25. West wind around 9 mph, with gusts as high as 17 mph.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 38. West wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 38 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18. West wind 8 to 10 mph becoming north after midnight. Winds could gust as high as 17 mph.

    Low: 18 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Sunny, with a high near 29. North wind 5 to 8 mph becoming calm in the morning.

    High: 29 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. North northeast wind 3 to 5 mph.

    Low: 21 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 25. West wind around 9 mph, with gusts as high as 17 mph.
Wednesday
Mostly cloudy, with a high near 38. West wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 18. West wind 8 to 10 mph becoming north after midnight. Winds could gust as high as 17 mph.
New Year's Day
Sunny, with a high near 29. North wind 5 to 8 mph becoming calm in the morning.
Thursday Night
Partly cloudy, with a low around 21. Calm wind.
Friday
Partly sunny, with a high near 35. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 21. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Mostly clear, with a low around 20.
Sunday
Partly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Sullivan IL
 39.52°N 88.59°W (Elev. 617 ft)
Last Update:
3:16 am CST Dec 31, 2025
Forecast Valid:
3am CST Dec 31, 2025-6pm CST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation