Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Partly Cloudy

61°F

16°C

Humidity 84%
Wind Speed S 13 mph
Barometer 29.60 in (1002.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 9 Jan 2:53 am CST
Extended Forecast for

Sullivan IL

  • Overnight

    Overnight: Partly cloudy, with a low around 45. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Cloudy, with a high near 48. Breezy, with a west wind 16 to 21 mph becoming light and variable  in the afternoon. Winds could gust as high as 33 mph.

    High: 48 °F

    Cloudy and
    Breezy then
    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain after 3am.  Mostly cloudy, with a low around 37. Light and variable wind becoming east northeast around 5 mph after midnight.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon.  Cloudy, then gradually becoming mostly sunny, with a high near 43. West northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 43 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. West northwest wind 11 to 18 mph, with gusts as high as 26 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. West northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. West wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 17 mph.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph.
Friday
Cloudy, with a high near 48. Breezy, with a west wind 16 to 21 mph becoming light and variable in the afternoon. Winds could gust as high as 33 mph.
Friday Night
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming east northeast around 5 mph after midnight.
Saturday
A 30 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 43. West northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 21. West northwest wind 11 to 18 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 32. West northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 23. West wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 17 mph.
Monday
Sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Mostly cloudy, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Partly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
2:52 am CST Jan 9, 2026
2am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
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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