Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

31°F

-1°C

Humidity 61%
Wind Speed W 9 mph
Barometer 30.30 in (1026.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 27 Nov 4:53 pm CST
Extended Forecast for

Sullivan IL

Winter Storm Watch November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Watch
  • Tonight

    Tonight: Clear, with a low around 20. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 20 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm  in the afternoon.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Snow likely, mainly after 3am.  Increasing clouds, with a low around 23. Calm wind becoming southeast 5 to 8 mph after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow. The snow could be heavy at times.  High near 33. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 33 °F

    Heavy Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight.  Low around 25. South southeast wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 28. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 28 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 10. Northwest wind 3 to 7 mph.

    Low: 10 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 23.

    High: 23 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
Clear, with a low around 20. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Friday Night
Snow likely, mainly after 3am. Increasing clouds, with a low around 23. Calm wind becoming southeast 5 to 8 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Snow. The snow could be heavy at times. High near 33. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 25. South southeast wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Sunday
Mostly cloudy, with a high near 28. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 10. Northwest wind 3 to 7 mph.
Monday
Mostly cloudy, with a high near 23.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Mostly cloudy, with a high near 30.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
3:16 pm CST Nov 27, 2025
5pm CST Nov 27, 2025-6pm CST Dec 4, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database