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 80%
Wind Speed Calm
Barometer 29.71 in (1006.2 mb)
Dewpoint 44°F (7°C)
Visibility 7.00 mi
Last update 6 Jan 4:53 pm CST
Extended Forecast for

2 Miles SW Sullivan IL

  • Tonight

    Tonight: Increasing clouds, with a low around 34. West northwest wind 5 to 9 mph becoming light west after midnight. Winds could gust as high as 17 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 53. Light and variable wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 40. South wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Showers, mainly after noon. High near 61. Breezy, with a south southeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely and
    Breezy then
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 54. West southwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 17 mph.

    High: 54 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 38. Northeast wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Partly sunny, with a high near 45.

    High: 45 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 34. West northwest wind 5 to 9 mph becoming light west after midnight. Winds could gust as high as 17 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 53. Light and variable wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
Increasing clouds, with a low around 40. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
Showers, mainly after noon. High near 61. Breezy, with a south southeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, with a high near 54. West southwest wind 6 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 17 mph.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38. Northeast wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 16 mph.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 22.
Monday
Sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Sullivan IL
 39.59°N 88.64°W (Elev. 673 ft)
Last Update:
5:12 pm CST Jan 6, 2026
Forecast Valid:
5pm CST Jan 6, 2026-6pm CST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation