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.

Fair

72°F

22°C

Humidity 87%
Wind Speed S 3 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Aug 11:53 pm CDT
Extended Forecast for

6 Miles NNE Greenup IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 79. Southwest wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Northeast wind 3 to 6 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Light northeast wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 66. Calm wind.
Wednesday
Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 79. Southwest wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 81. Northeast wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 61. Light northeast wind.
Friday
Sunny, with a high near 82. Light and variable wind.
Friday Night
Mostly clear, with a low around 63. Calm wind.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNE Greenup IL
 39.32°N 88.11°W (Elev. 600 ft)
Last Update:
11:41 pm CDT Aug 18, 2026
Forecast Valid:
12am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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