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

0°F

-18°C

Humidity 79%
Wind Speed W 6 mph
Barometer 30.31 in (1028.2 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill-12°F (-24°C)
Last update 28 Jan 6:53 am CST
Extended Forecast for

Sullivan IL

Cold Weather Advisory January 28, 07:20am until January 28, 10:00am
Click here for hazard details and duration
...
  •  
    Cold Weather Advisory January 28, 07:20am until January 28, 10:00am

    NOW until 10:00am Wed

    Cold Weather Advisory

  • Today

    High: 20 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 1. Wind chill values between -4 and -9. West wind around 6 mph becoming light and variable after midnight.

    Low: 1 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 16. Wind chill values between zero and 9. Calm wind becoming north around 5 mph.

    High: 16 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -3. Wind chill values between -7 and -12. Calm wind becoming north around 5 mph after midnight.

    Low: -3 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13. North wind 6 to 8 mph.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -1. North northwest wind 6 to 10 mph, with gusts as high as 16 mph.

    Low: -1 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 15. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 15 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 20. Wind chill values between -8 and -18. West wind 7 to 14 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 1. Wind chill values between -4 and -9. West wind around 6 mph becoming light and variable after midnight.
Thursday
Mostly cloudy, with a high near 16. Wind chill values between zero and 9. Calm wind becoming north around 5 mph.
Thursday Night
Mostly cloudy, with a low around -3. Wind chill values between -7 and -12. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny, with a high near 13. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -1. North northwest wind 6 to 10 mph, with gusts as high as 16 mph.
Saturday
Mostly sunny, with a high near 15. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9.
Monday
Mostly cloudy, with a high near 27.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 30.
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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:
6:36 am CST Jan 28, 2026
Forecast Valid:
7am CST Jan 28, 2026-6pm CST Feb 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation