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.

Partly Cloudy

73°F

23°C

Humidity 84%
Wind Speed S 8 mph
Barometer 29.96 in (1014.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 May 11:53 am CDT
Extended Forecast for

Martinsville IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly between 1pm and 4pm. Cloudy, with a high near 76. South southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 64. South southeast wind around 7 mph.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 86. South wind 9 to 17 mph, with gusts as high as 28 mph.

    High: 86 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 85. Breezy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. South wind around 15 mph, with gusts as high as 26 mph.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Breezy.
    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly between 1pm and 4pm. Cloudy, with a high near 76. South southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 64. South southeast wind around 7 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 86. South wind 9 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 66. South wind 10 to 13 mph, with gusts as high as 24 mph.
Monday
Showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 85. Breezy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. 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 before 1am. Mostly cloudy, with a low around 69. South wind around 15 mph, with gusts as high as 26 mph.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 62. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Martinsville IL
 39.34°N 87.88°W (Elev. 600 ft)
Last Update:
12:16 pm CDT May 16, 2026
Forecast Valid:
12pm CDT May 16, 2026-6pm CDT May 22, 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