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.

Light Snow and Windy

21°F

-6°C

Humidity 78%
Wind Speed W 26 G 41 mph
Barometer 29.79 in (1009.7 mb)
Dewpoint 15°F (-9°C)
Visibility 1.75 mi
Wind Chill4°F (-16°C)
Last update 16 Mar 10:53 am CDT
Extended Forecast for

Sullivan IL

Wind Advisory March 16, 11:40am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 11:40am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Today

    High: 25 °F

    Chance Snow
    and Blustery

  • Tonight

    Tonight: A chance of flurries with a slight chance of snow before 7pm, then a chance of flurries between 7pm and 11pm. Mostly cloudy, with a low around 12. Wind chill values between -2 and 8. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 10%.

    Low: 12 °F

    Slight Chance
    Snow and
    Blustery then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Wind chill values between -3 and 7. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am. Mostly cloudy, with a low around 24. South southeast wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow Likely

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 53. South wind 11 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. South southwest wind around 6 mph.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64. South southwest wind 6 to 8 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Today
A 30 percent chance of snow, mainly before 4pm. Mostly cloudy, with a high near 25. Blustery, with a west northwest wind 24 to 28 mph, with gusts as high as 41 mph.
Tonight
A chance of flurries with a slight chance of snow before 7pm, then a chance of flurries between 7pm and 11pm. Mostly cloudy, with a low around 12. Wind chill values between -2 and 8. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 10%.
Tuesday
Partly sunny, with a high near 28. Wind chill values between -3 and 7. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 24. South southeast wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 53. South wind 11 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 36. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 64. South southwest wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 66.
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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:
11:02 am CDT Mar 16, 2026
Forecast Valid:
11am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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