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 and Breezy

35°F

2°C

Humidity 93%
Wind Speed W 21 G 41 mph
Barometer 29.46 in (997.5 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 15 Mar 11:53 pm CDT
Extended Forecast for

Sullivan IL

Wind Advisory March 16, 12:32am until March 16, 10:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 12:32am until March 16, 10:00am

    NOW until 10:00am Mon

    Wind Advisory

  • Overnight

    Low: 22 °F

    Chance
    Rain/Snow and
    Breezy

  • Monday

    Monday: A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 27. Wind chill values between 5 and 11. Blustery, with a west northwest wind 23 to 29 mph, with gusts as high as 44 mph.

    High: 27 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Wind chill values between -3 and 7. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 32 mph.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 26. Wind chill values between -5 and 5. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 22. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 51. South wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 51 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. South southwest wind around 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Overnight
A chance of rain and snow before 1am, then a chance of snow. Cloudy, with a low around 22. Breezy, with a west wind 24 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 40%.
Monday
A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 27. Wind chill values between 5 and 11. Blustery, with a west northwest wind 23 to 29 mph, with gusts as high as 44 mph.
Monday Night
Mostly cloudy, with a low around 11. Wind chill values between -3 and 7. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 32 mph.
Tuesday
Mostly sunny, with a high near 26. Wind chill values between -5 and 5. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 22. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 51. South wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 36. South southwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Mostly sunny, with a high near 67.
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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:
10:31 pm CDT Mar 15, 2026
Forecast Valid:
12am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation