Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast

24°F

-4°C

Humidity 77%
Wind Speed S 14 mph
Barometer 29.92 in (1014.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 5 Feb 6:53 pm CST
Extended Forecast for

Sullivan IL

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 23. South wind 6 to 9 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.

    Low: 23 °F

    Gradual
    Clearing

  • Friday

    Friday: Mostly cloudy, with a high near 38. Breezy, with a west southwest wind 8 to 13 mph becoming north northwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 38 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Wind chill values between 4 and 9. North wind 8 to 14 mph, with gusts as high as 22 mph.

    Low: 13 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 26. Wind chill values between 4 and 14. North northeast wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 26 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18. Light southeast wind becoming south southeast 5 to 9 mph in the evening. Winds could gust as high as 15 mph.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 38. South southeast wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 38 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. Southeast wind around 6 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 23. South wind 6 to 9 mph becoming west southwest after midnight. Winds could gust as high as 18 mph.
Friday
Mostly cloudy, with a high near 38. Breezy, with a west southwest wind 8 to 13 mph becoming north northwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Wind chill values between 4 and 9. North wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 26. Wind chill values between 4 and 14. North northeast wind 5 to 7 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 18. Light southeast wind becoming south southeast 5 to 9 mph in the evening. Winds could gust as high as 15 mph.
Sunday
Partly sunny, with a high near 38. South southeast wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Partly cloudy, with a low around 22. Southeast wind around 6 mph.
Monday
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 38.
Wednesday
A chance of rain. Cloudy, with a high near 49.
Wednesday Night
A chance of rain. Cloudy, with a low around 31.
Thursday
A chance of rain. Mostly cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
6:37 pm CST Feb 5, 2026
7pm CST Feb 5, 2026-6pm CST Feb 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

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