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

16°F

-9°C

Humidity 54%
Wind Speed W 10 mph
Barometer 30.28 in (1026.9 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 28 Jan 11:53 am CST
Extended Forecast for

Sullivan IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 20. Wind chill values between 3 and 8. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 20 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, 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

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 16. Wind chill values between -6 and 4. North northeast wind 3 to 6 mph.

    High: 16 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -3. Wind chill values between -7 and -12. North northeast wind around 5 mph becoming calm.

    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

  • Sunday

    Sunday: Mostly sunny, with a high near 20.

    High: 20 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 20. Wind chill values between 3 and 8. West wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, 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 -6 and 4. North northeast wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around -3. Wind chill values between -7 and -12. North northeast wind around 5 mph becoming calm.
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
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
Last Update:
11:37 am CST Jan 28, 2026
Forecast Valid:
12pm CST Jan 28, 2026-6pm CST Feb 3, 2026
 
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Additional Resources

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Chance of Precipitation