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

73°F

23°C

Humidity 84%
Wind Speed S 5 mph
Barometer 29.97 in (1014.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Aug 9:53 pm CDT
Extended Forecast for

4 Miles SW Arthur IL

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Increasing clouds, with a low around 66. South southwest wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 79. West wind 3 to 5 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Northeast wind around 6 mph.

    High: 81 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Light east northeast wind.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind becoming west southwest around 5 mph after midnight.

    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 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
A 10 percent chance of showers after 5am. Increasing clouds, with a low around 66. South southwest wind 3 to 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 79. West wind 3 to 5 mph.
Wednesday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 30%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 60. Light east northeast wind.
Friday
Sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Calm wind becoming west southwest around 5 mph after midnight.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Arthur IL
 39.67°N 88.52°W (Elev. 663 ft)
Last Update:
10:36 pm CDT Aug 18, 2026
Forecast Valid:
10pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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