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.

A Few Clouds

30°F

-1°C

Humidity 56%
Wind Speed NW 9 mph
Barometer 30.41 in (1030.8 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 28 Nov 12:53 pm CST
Extended Forecast for

Sullivan IL

Winter Storm Warning November 29, 06:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 34. West northwest wind 5 to 7 mph becoming calm.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: Snow likely, mainly after 5am. Increasing clouds, with a low around 22. Light southeast wind increasing to 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow before 2pm, then snow, possibly mixed with sleet between 2pm and 4pm, then snow after 4pm. The snow could be heavy at times. High near 35. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 7 inches possible.

    High: 35 °F

    Snow then
    Snow/Sleet
    and Breezy

  • Saturday Night

    Saturday Night: Rain and snow before 3am, then a chance of snow. Low around 22. South wind 13 to 18 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Rain/Snow
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 28. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 28 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 10. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 10 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 24. Light north northeast wind.

    High: 24 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 34. West northwest wind 5 to 7 mph becoming calm.
Tonight
Snow likely, mainly after 5am. Increasing clouds, with a low around 22. Light southeast wind increasing to 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
Snow before 2pm, then snow, possibly mixed with sleet between 2pm and 4pm, then snow after 4pm. The snow could be heavy at times. High near 35. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 7 inches possible.
Saturday Night
Rain and snow before 3am, then a chance of snow. Low around 22. South wind 13 to 18 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
Mostly cloudy, with a high near 28. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 10. Northwest wind 5 to 8 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 24. Light north northeast wind.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 27.
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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:
12:26 pm CST Nov 28, 2025
Forecast Valid:
1pm CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation