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

59°F

15°C

Humidity 87%
Wind Speed Calm
Barometer 30.08 in (1018.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 May 12:53 am CDT
Extended Forecast for

Arthur IL

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 54. Light east wind.

    Low: 54 °F

    Patchy Fog

  • Memorial Day

    Memorial Day: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. East wind 3 to 8 mph.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. East southeast wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 81. East wind 3 to 7 mph.

    High: 81 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 64. East wind 3 to 6 mph.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. East wind around 6 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62. Northeast wind 3 to 6 mph.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 54. Light east wind.
Memorial Day
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. East wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 58. East southeast wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 81. East wind 3 to 7 mph.
Tuesday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 64. East wind 3 to 6 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. East wind around 6 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 62. Northeast wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Partly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arthur IL
 39.71°N 88.46°W (Elev. 663 ft)
Last Update:
1:26 am CDT May 25, 2026
Forecast Valid:
1am CDT May 25, 2026-6pm CDT May 31, 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