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

29°F

-2°C

Humidity 89%
Wind Speed S 7 mph
Barometer 30.14 in (1021.5 mb)
Dewpoint 26°F (-3°C)
Visibility 8.00 mi
Wind Chill22°F (-6°C)
Last update 3 Dec 6:53 pm CST
Extended Forecast for

Sullivan IL

  • Tonight

    Tonight: A chance of snow and freezing rain before 11pm, then a slight chance of snow between 11pm and midnight. Cloudy, with a low around 7. Wind chill values between zero and 5. North wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 7 °F

    Chance Wintry
    Mix then
    Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 16. Wind chill values between -4 and 6. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 16 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 3. Light and variable wind.

    Low: 3 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30. Wind chill values between 1 and 11. South southwest wind 3 to 6 mph.

    High: 30 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18. South southwest wind around 5 mph.

    Low: 18 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 32. West southwest wind around 5 mph becoming calm in the afternoon.

    High: 32 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18. Calm wind becoming north northeast around 6 mph after midnight.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow and freezing rain before 11pm, then a slight chance of snow between 11pm and midnight. Cloudy, with a low around 7. Wind chill values between zero and 5. North wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 16. Wind chill values between -4 and 6. North wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 3. Light and variable wind.
Friday
Mostly sunny, with a high near 30. Wind chill values between 1 and 11. South southwest wind 3 to 6 mph.
Friday Night
Mostly cloudy, with a low around 18. South southwest wind around 5 mph.
Saturday
Partly sunny, with a high near 32. West southwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 18. Calm wind becoming north northeast around 6 mph after midnight.
Sunday
Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A chance of rain. Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
Last Update:
6:36 pm CST Dec 3, 2025
Forecast Valid:
7pm CST Dec 3, 2025-6pm CST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation