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.

Fair

62°F

17°C

Humidity 73%
Wind Speed NE 5 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 20 May 8:53 pm CDT
Extended Forecast for

Arthur IL

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Northeast wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52. East wind around 11 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Showers, mainly after 1pm. High near 69. East northeast wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 58. East northeast wind 7 to 9 mph becoming west southwest after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 77. West southwest wind 7 to 9 mph.

    High: 77 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59. West southwest wind around 6 mph becoming light and variable in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers. Mostly cloudy, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. Northeast wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 69. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 52. East wind around 11 mph, with gusts as high as 18 mph.
Friday
Showers, mainly after 1pm. High near 69. East northeast wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 58. East northeast wind 7 to 9 mph becoming west southwest after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly cloudy, with a high near 77. West southwest wind 7 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 59. West southwest wind around 6 mph becoming light and variable in the evening.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 78.
Sunday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 59.
Memorial Day
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 79.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers. Partly sunny, with a high near 81.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arthur IL
 39.71°N 88.46°W (Elev. 663 ft)
Last Update:
9:36 pm CDT May 20, 2026
Forecast Valid:
9pm CDT May 20, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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