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 with Haze

61°F

16°C

Humidity 78%
Wind Speed N 3 mph
Barometer 30.03 in (1016.6 mb)
Dewpoint 54°F (12°C)
Visibility 6.00 mi
Last update 26 May 2:53 am CDT
Extended Forecast for

Martinsville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 79. East wind 3 to 8 mph.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers before midnight, then a chance of showers and thunderstorms between midnight and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. North northeast wind 3 to 5 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Calm wind becoming north northeast around 6 mph after midnight.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Northeast wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. East northeast wind around 8 mph, with gusts as high as 16 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 79. East wind 3 to 8 mph.
Tuesday Night
A slight chance of showers before midnight, then a chance of showers and thunderstorms between midnight and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. North northeast wind 3 to 5 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 60. Calm wind becoming north northeast around 6 mph after midnight.
Thursday
Mostly sunny, with a high near 81. Northeast wind 7 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 59. East northeast wind around 8 mph, with gusts as high as 16 mph.
Friday
Partly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martinsville IL
 39.34°N 87.88°W (Elev. 600 ft)
Last Update:
2:51 am CDT May 26, 2026
Forecast Valid:
3am CDT May 26, 2026-6pm CDT Jun 1, 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