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.

Overcast

58°F

14°C

Humidity 75%
Wind Speed SE 14 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 May 10:53 am CDT
Extended Forecast for

Arthur IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 74. South wind 15 to 17 mph, with gusts as high as 28 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. South southeast wind around 11 mph, with gusts as high as 22 mph.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 9am, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Increasing clouds, with a low around 63. South wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 85. Breezy, with a south wind 11 to 20 mph, with gusts as high as 30 mph.

    High: 85 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. South wind around 16 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 84. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy. Chance of precipitation is 70%.

    High: 84 °F

    Breezy.
    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 74. South wind 15 to 17 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. South southeast wind around 11 mph, with gusts as high as 22 mph.
Saturday
Showers and thunderstorms likely, mainly before 9am, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Increasing clouds, with a low around 63. South wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Sunday
Sunny, with a high near 85. Breezy, with a south wind 11 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 67. South wind around 16 mph, with gusts as high as 25 mph.
Monday
Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 84. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arthur IL
 39.71°N 88.46°W (Elev. 663 ft)
Last Update:
9:07 am CDT May 15, 2026
Forecast Valid:
11am CDT May 15, 2026-6pm CDT May 21, 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