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

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Mostly Cloudy

70°F

21°C

Humidity 93%
Wind Speed SE 7 mph
Barometer 29.90 in (1011.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 Jun 9:53 pm CDT
Extended Forecast for

5 Miles S Sullivan IL

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 67. Light south wind.

    Low: 67 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 86 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. South wind around 6 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly after 1pm. High near 83. South southwest wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 67 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 82. West northwest wind around 6 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 67. Light south wind.
Tuesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. South wind around 6 mph.
Wednesday
Showers and thunderstorms, mainly after 1pm. High near 83. South southwest wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Juneteenth
Mostly sunny, with a high near 82. West northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Sullivan IL
 39.52°N 88.59°W (Elev. 617 ft)
Last Update:
10:41 pm CDT Jun 16, 2025
Forecast Valid:
10pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation