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Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Fair

37°F

3°C

Humidity 82%
Wind Speed S 7 mph
Barometer 29.95 in (1014.7 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 27 Feb 6:53 am CST
Extended Forecast for

Sullivan IL

  • Today

    Today: Sunny, with a high near 66. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 66 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 34. South southwest wind 7 to 10 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Partly sunny, with a high near 55. North northeast wind 6 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 55 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain and snow likely, becoming all snow after midnight. Cloudy, with a low around 26. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 26 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Monday

    Monday: A chance of rain and snow before noon. Mostly cloudy, with a high near 38. East wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    High: 38 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 46. Chance of precipitation is 80%.

    High: 46 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 66. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
Mostly clear, with a low around 34. South southwest wind 7 to 10 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.
Saturday
A 20 percent chance of rain after noon. Partly sunny, with a high near 55. North northeast wind 6 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 25. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday
Mostly cloudy, with a high near 41. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Rain and snow likely, becoming all snow after midnight. Cloudy, with a low around 26. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of rain and snow before noon. Mostly cloudy, with a high near 38. East wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 30.
Tuesday
Rain. High near 46. Chance of precipitation is 80%.
Tuesday Night
Rain likely, mainly before midnight. Cloudy, with a low around 35. Chance of precipitation is 60%.
Wednesday
A chance of rain. Cloudy, with a high near 56.
Wednesday Night
Rain likely. Cloudy, with a low around 47.
Thursday
Rain likely. Mostly cloudy, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IL
 39.59°N 88.61°W (Elev. 669 ft)
Last Update:
5:56 am CST Feb 27, 2026
Forecast Valid:
7am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation