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

61°F

16°C

Humidity 56%
Wind Speed NW 12 mph
Barometer 29.70 in (1005.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Nov 6:53 pm CST
Extended Forecast for

3 Miles E Sullivan IL

  • Tonight

    Tonight: Mostly clear, with a low around 38. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 54. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 42. Southeast wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Rain Likely

  • Tuesday

    Tuesday: A 40 percent chance of rain before noon. Mostly cloudy, with a high near 60. South southeast wind 8 to 10 mph, with gusts as high as 16 mph.

    High: 60 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. East northeast wind around 7 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 38. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 54. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 55. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Monday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 42. Southeast wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A 40 percent chance of rain before noon. Mostly cloudy, with a high near 60. South southeast wind 8 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Mostly cloudy, with a low around 39. East northeast wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 44.
Thursday
Rain. High near 60. Chance of precipitation is 80%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 49.
Friday
Rain likely. Mostly cloudy, with a high near 61.
Friday Night
A chance of rain. Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Sullivan IL
 39.61°N 88.55°W (Elev. 650 ft)
Last Update:
7:32 pm CST Nov 15, 2025
Forecast Valid:
7pm CST Nov 15, 2025-6pm CST Nov 22, 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