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.

Partly Cloudy and Breezy

19°F

-7°C

Humidity 68%
Wind Speed W 21 mph
Barometer 30.21 in (1024.5 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 27 Jan 12:53 pm CST
Extended Forecast for

Sullivan IL

Cold Weather Advisory January 27, 09:00pm until January 28, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 21. Wind chill values between zero and 6. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 21 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -7. Wind chill values between -10 and -20. West northwest wind 3 to 7 mph.

    Low: -7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 18. Wind chill values between -10 and -20. West wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 18 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -1. Wind chill values between -3 and -8. West wind 5 to 7 mph becoming light and variable in the evening.

    Low: -1 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 14. North wind 3 to 5 mph.

    High: 14 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -3. North wind 3 to 6 mph.

    Low: -3 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 11. North wind 6 to 9 mph.

    High: 11 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 21. Wind chill values between zero and 6. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around -7. Wind chill values between -10 and -20. West northwest wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 18. Wind chill values between -10 and -20. West wind 6 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around -1. Wind chill values between -3 and -8. West wind 5 to 7 mph becoming light and variable in the evening.
Thursday
Mostly cloudy, with a high near 14. North wind 3 to 5 mph.
Thursday Night
Mostly cloudy, with a low around -3. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 11. North wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around -2.
Saturday
Mostly sunny, with a high near 15.
Saturday Night
Partly cloudy, with a low around 0.
Sunday
Partly sunny, with a high near 19.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 9.
Monday
Mostly cloudy, with a high near 26.
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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:
1:16 pm CST Jan 27, 2026
Forecast Valid:
1pm CST Jan 27, 2026-6pm CST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation