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

54°F

12°C

Humidity 55%
Wind Speed S 15 G 26 mph
Barometer 29.64 in (1003.7 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 15 Mar 4:53 am CDT
Extended Forecast for

Sullivan IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 4pm. High near 66. Windy, with a south wind 18 to 23 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 49 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Chance Rain
    and Breezy
    then Rain and
    Windy

  • Tonight

    Tonight: Rain before 11pm, then a chance of rain and snow between 11pm and midnight, then a chance of snow after midnight. Some thunder is also possible. Low around 22. Blustery, with a west wind 25 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Rain/Snow and
    Breezy then
    Chance Snow
    and Blustery

  • Monday

    Monday: A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 26. Wind chill values between 5 and 11. Blustery, with a west northwest wind 24 to 28 mph, with gusts as high as 43 mph.

    High: 26 °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 14 to 20 mph, with gusts as high as 31 mph.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. West northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 23. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 53. South wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 53 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 4pm. High near 66. Windy, with a south wind 18 to 23 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 49 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain before 11pm, then a chance of rain and snow between 11pm and midnight, then a chance of snow after midnight. Some thunder is also possible. Low around 22. Blustery, with a west wind 25 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 26. Wind chill values between 5 and 11. Blustery, with a west northwest wind 24 to 28 mph, with gusts as high as 43 mph.
Monday Night
Mostly cloudy, with a low around 11. Wind chill values between -3 and 7. Blustery, with a west northwest wind 14 to 20 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 29. West northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 23. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 53. South wind 13 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 36.
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 43.
Saturday
Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
Last Update:
4:36 am CDT Mar 15, 2026
Forecast Valid:
5am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation