National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

50°F

10°C

Humidity 43%
Wind Speed W 7 mph
Barometer 30.11 in (1019.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 12 Nov 7:53 pm CST
Extended Forecast for

Sullivan IL

  • Tonight

    Tonight: Partly cloudy, with a low around 34. West wind 3 to 7 mph.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 61. Calm wind becoming south around 6 mph in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. South southeast wind around 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70. South southwest wind around 7 mph.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. South southwest wind 6 to 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 73. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. West southwest wind around 10 mph becoming northwest in the evening. Winds could gust as high as 18 mph.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. West wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 61. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 42. South southeast wind around 6 mph.
Friday
Mostly sunny, with a high near 70. South southwest wind around 7 mph.
Friday Night
Partly cloudy, with a low around 53. South southwest wind 6 to 9 mph.
Saturday
Partly sunny, with a high near 73. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 40. West southwest wind around 10 mph becoming northwest in the evening. Winds could gust as high as 18 mph.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 33.
Monday
Mostly sunny, with a high near 55.
Monday Night
Rain likely. Mostly cloudy, with a low around 38.
Tuesday
A chance of rain. Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A chance of rain. Partly sunny, with a high near 53.
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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:
7:21 pm CST Nov 12, 2025
Forecast Valid:
8pm CST Nov 12, 2025-6pm CST Nov 19, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation