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.

Partly Cloudy

71°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 30.03 in (1016.3 mb)
Dewpoint 69°F (21°C)
Visibility 9.00 mi
Last update 16 Jun 12:53 am CDT
Extended Forecast for

3 Miles NNE Sullivan IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 68. Light east wind.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 82. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 67. South wind around 6 mph becoming calm after midnight.

    Low: 67 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. South southwest wind 5 to 7 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 69. South southwest wind 6 to 8 mph.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 10am. Mostly cloudy, with a high near 84. South southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 64. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. Light east wind.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 82. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 30%.
Monday Night
A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 67. South wind around 6 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 88. South southwest wind 5 to 7 mph.
Tuesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 69. South southwest wind 6 to 8 mph.
Wednesday
A chance of showers, then showers and thunderstorms likely after 10am. Mostly cloudy, with a high near 84. South southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 64. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Juneteenth
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Sullivan IL
 39.63°N 88.58°W (Elev. 650 ft)
Last Update:
1:40 am CDT Jun 16, 2025
Forecast Valid:
1am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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