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

47°F

8°C

Humidity 66%
Wind Speed SE 12 G 21 mph
Barometer 29.88 in (1012.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 8 Jan 4:53 am CST
Extended Forecast for

3 Miles E Sullivan IL

  • Today

    Today: Rain likely, mainly after 5pm. Patchy fog between 9am and noon. Otherwise, cloudy, with a high near 63. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Rain Likely
    and Patchy
    Fog

  • Tonight

    Tonight: Rain and thunderstorms before 3am, then a slight chance of rain between 3am and 5am. Low around 49. Breezy, with a south wind 20 to 25 mph becoming west southwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Breezy. Rain
    then Chance
    Rain

  • Friday

    Friday: Partly sunny, with a temperature falling to around 46 by 5pm. Breezy, with a west southwest wind 15 to 20 mph becoming north 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 52 °F⇓

    Partly Sunny
    and Breezy
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 37. Northeast wind around 6 mph.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 43. North wind 6 to 11 mph becoming west northwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 43 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. West wind 14 to 18 mph, with gusts as high as 26 mph.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 30. West northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 30 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

Today
Rain likely, mainly after 5pm. Patchy fog between 9am and noon. Otherwise, cloudy, with a high near 63. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain and thunderstorms before 3am, then a slight chance of rain between 3am and 5am. Low around 49. Breezy, with a south wind 20 to 25 mph becoming west southwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Partly sunny, with a temperature falling to around 46 by 5pm. Breezy, with a west southwest wind 15 to 20 mph becoming north 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 37. Northeast wind around 6 mph.
Saturday
A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 43. North wind 6 to 11 mph becoming west northwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly cloudy, with a low around 21. West wind 14 to 18 mph, with gusts as high as 26 mph.
Sunday
Partly sunny, with a high near 30. West northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Sullivan IL
 39.61°N 88.55°W (Elev. 650 ft)
Last Update:
5:02 am CST Jan 8, 2026
Forecast Valid:
5am CST Jan 8, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation