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.

Fair

30°F

-1°C

Humidity 88%
Wind Speed SE 7 mph
Barometer 29.96 in (1015.3 mb)
Dewpoint 27°F (-3°C)
Visibility 9.00 mi
Wind Chill23°F (-5°C)
Last update 6 Dec 8:53 pm CST
Extended Forecast for

Sullivan IL

Winter Weather Advisory until December 7, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 7, 06:00am

    NOW until 6:00am Sun

    Winter Weather Advisory

  • Tonight

    Low: 27 °F

    Cloudy then
    Chance
    Rain/Freezing
    Rain and
    Patchy Fog

  • Sunday

    Sunday: A 30 percent chance of rain, mainly before 9am. Patchy fog before 11am. Otherwise, cloudy, with a high near 35. South wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    High: 35 °F

    Chance Rain
    and Patchy
    Fog then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13. Wind chill values between 5 and 10. North wind 6 to 10 mph, with gusts as high as 16 mph.

    Low: 13 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 26. North northeast wind around 6 mph becoming calm in the morning.

    High: 26 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. Light south southeast wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 21 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42. South southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Southwest wind 11 to 17 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of freezing rain between midnight and 3am, then a chance of rain. Patchy fog after 1am. Otherwise, cloudy, with a low around 27. South southeast wind around 6 mph. Chance of precipitation is 30%.
Sunday
A 30 percent chance of rain, mainly before 9am. Patchy fog before 11am. Otherwise, cloudy, with a high near 35. South wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 13. Wind chill values between 5 and 10. North wind 6 to 10 mph, with gusts as high as 16 mph.
Monday
Mostly sunny, with a high near 26. North northeast wind around 6 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 15. Light south southeast wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Partly sunny, with a high near 42. South southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Southwest wind 11 to 17 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 41.
Wednesday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 21.
Thursday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 21.
Friday Night
Mostly cloudy, with a low around 1.
Saturday
Mostly sunny, with a high near 15.
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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:
8:37 pm CST Dec 6, 2025
Forecast Valid:
9pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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