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

27°F

-3°C

Humidity 78%
Wind Speed E 6 mph
Barometer 30.36 in (1029.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 28 Nov 10:53 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

  • Tonight

    Tonight: Snow likely, mainly after 5am. Cloudy, with a low around 22. Southeast wind 5 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 22 °F

    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 midnight, then a chance of snow. Low around 24. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 27. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 28 mph.

    High: 27 °F

    Cloudy and
    Breezy then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 15 mph.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after noon. Cloudy, with a high near 26. Light northeast wind.

    High: 26 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 15. Light and variable wind. Chance of precipitation is 60%.

    Low: 15 °F

    Snow Likely
    then Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly after 5am. Cloudy, with a low around 22. Southeast wind 5 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. Total nighttime 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 midnight, then a chance of snow. Low around 24. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
Mostly cloudy, with a high near 27. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around 12. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Monday
A 30 percent chance of snow after noon. Cloudy, with a high near 26. Light northeast wind.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 15. Light and variable wind. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Partly sunny, with a high near 24.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Mostly cloudy, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.61°N 88.61°W (Elev. 669 ft)
Last Update:
8:37 pm CST Nov 28, 2025
Forecast Valid:
11pm CST Nov 28, 2025-6pm CST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

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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