Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast and Windy

25°F

-4°C

Humidity 58%
Wind Speed N 29 G 43 mph
Barometer 29.95 in (1014.9 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 14 Jan 3:53 pm CST
Extended Forecast for

Sullivan IL

  • Tonight

    Tonight: Mostly clear, with a low around 15. Wind chill values between 4 and 9. North northwest wind 11 to 18 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 27. Wind chill values between 2 and 12. Northwest wind 7 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 27 °F

    Sunny

  • Thursday Night

    Thursday Night: Snow likely, mainly after midnight.  Mostly cloudy, with a low around 23. South southwest wind 7 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Snow Likely

  • Friday

    Friday: Mostly cloudy, with a high near 39. West wind 11 to 17 mph, with gusts as high as 28 mph.

    High: 39 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight.  Mostly cloudy, with a low around 16. West wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 16 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 21. West wind 11 to 16 mph, with gusts as high as 24 mph.

    High: 21 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 5. West northwest wind around 10 mph, with gusts as high as 17 mph.

    Low: 5 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 15. Wind chill values between 4 and 9. North northwest wind 11 to 18 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 27. Wind chill values between 2 and 12. Northwest wind 7 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 23. South southwest wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Mostly cloudy, with a high near 39. West wind 11 to 17 mph, with gusts as high as 28 mph.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 16. West wind 10 to 14 mph, with gusts as high as 21 mph.
Saturday
Mostly cloudy, with a high near 21. West wind 11 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 5. West northwest wind around 10 mph, with gusts as high as 17 mph.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Mostly cloudy, with a low around 9.
M.L.King Day
Mostly sunny, with a high near 19.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
3:36 pm CST Jan 14, 2026
4pm CST Jan 14, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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