Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Mostly Cloudy

32°F

0°C

Humidity 61%
Wind Speed S 3 mph
Barometer 29.96 in (1015.0 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 1 Jan 12:53 pm CST
Extended Forecast for

Sullivan IL

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 32. Calm wind becoming west around 5 mph.

    High: 32 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. North wind 3 to 5 mph.

    Low: 22 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34. Northeast wind 5 to 7 mph.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: Cloudy, with a low around 23. Northeast wind around 6 mph.

    Low: 23 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 36. Northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 36 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. Light north northwest wind.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 37. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

New Year's Day
Mostly sunny, with a high near 32. Calm wind becoming west around 5 mph.
Tonight
Mostly cloudy, with a low around 22. North wind 3 to 5 mph.
Friday
Partly sunny, with a high near 34. Northeast wind 5 to 7 mph.
Friday Night
Cloudy, with a low around 23. Northeast wind around 6 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 36. Northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Mostly clear, with a low around 19. Light north northwest wind.
Sunday
Mostly sunny, with a high near 37. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
12:36 pm CST Jan 1, 2026
1pm CST Jan 1, 2026-6pm CST Jan 7, 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