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 Rain Fog/Mist

36°F

2°C

Humidity 97%
Wind Speed S 12 G 24 mph
Barometer 29.89 in (1012.8 mb)
Dewpoint 35°F (2°C)
Visibility 5.00 mi
Wind Chill28°F (-2°C)
Last update 29 Nov 9:53 pm CST
Extended Forecast for

Sullivan IL

  • Tonight

    Tonight: A chance of rain, mixing with snow after 11pm, then gradually ending. Cloudy, with a low around 21. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Breezy.
    Chance
    Rain/Snow
    then Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 26. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.

    High: 26 °F

    Cloudy and
    Breezy then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: A 50 percent chance of snow after noon. Cloudy, with a high near 29. Light east wind.

    High: 29 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 17. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. North northwest wind 3 to 5 mph.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13. Calm wind becoming south around 6 mph after midnight.

    Low: 13 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of rain, mixing with snow after 11pm, then gradually ending. Cloudy, with a low around 21. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Sunday
Cloudy, with a high near 26. Breezy, with a west wind 10 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Mostly cloudy, with a low around 16. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Monday
A 50 percent chance of snow after noon. Cloudy, with a high near 29. Light east wind.
Monday Night
Snow, mainly before midnight. Low around 17. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 24. North northwest wind 3 to 5 mph.
Tuesday Night
Mostly cloudy, with a low around 13. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 12.
Thursday
Partly sunny, with a high near 23.
Thursday Night
Mostly cloudy, with a low around 8.
Friday
Partly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 33.
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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:
9:36 pm CST Nov 29, 2025
Forecast Valid:
10pm CST Nov 29, 2025-6pm CST Dec 6, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation