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Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

33°F

1°C

Humidity 35%
Wind Speed W 15 G 22 mph
Barometer 30.26 in (1025.4 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 22 Jan 2:53 pm CST
Extended Forecast for

Sullivan IL

Winter Storm Watch January 24, 06:00am until January 25, 06:00pm
Cold Weather Advisory January 23, 03:00am until January 24, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 34. West wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 1. Wind chill values between -5 and -10. West wind 6 to 11 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.

    Low: 1 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 7. Wind chill values between -10 and -19. North wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 7 °F

    Cold

  • Friday Night

    Friday Night: Increasing clouds, with a low around 0. Wind chill values between -10 and -15. North northeast wind around 10 mph, with gusts as high as 17 mph.

    Low: 0 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow, mainly after noon. High near 10. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 10 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 7. East northeast wind 9 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 80%.

    Low: 7 °F

    Snow

  • Sunday

    Sunday: Snow likely. Cloudy, with a high near 14. North northeast wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 14 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2.

    Low: -2 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 11.

    High: 11 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 34. West wind 8 to 11 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 1. Wind chill values between -5 and -10. West wind 6 to 11 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.
Friday
Partly sunny and cold, with a high near 7. Wind chill values between -10 and -19. North wind 11 to 17 mph, with gusts as high as 26 mph.
Friday Night
Increasing clouds, with a low around 0. Wind chill values between -10 and -15. North northeast wind around 10 mph, with gusts as high as 17 mph.
Saturday
Snow, mainly after noon. High near 10. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
Snow. Low around 7. East northeast wind 9 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 80%.
Sunday
Snow likely. Cloudy, with a high near 14. North northeast wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2.
Monday
Mostly sunny, with a high near 11.
Monday Night
Mostly clear, with a low around -1.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
Mostly cloudy, with a low around 8.
Wednesday
Partly sunny, with a high near 19.
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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:
3:16 pm CST Jan 22, 2026
Forecast Valid:
3pm CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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