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

67°F

19°C

Humidity 73%
Wind Speed S 10 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 May 12:53 am CDT
Extended Forecast for

Martinsville IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. South wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 78. South southwest wind 9 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. South southeast wind 5 to 8 mph, with gusts as high as 16 mph.

    Low: 63 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 85. South wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. South wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Breezy, with a south wind 15 to 22 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: 86 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 85. Breezy. Chance of precipitation is 80%.

    High: 85 °F

    Breezy.
    Chance
    Showers then
    Showers

  • 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

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. South wind 10 to 13 mph, with gusts as high as 23 mph.
Saturday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 78. South southwest wind 9 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. South southeast wind 5 to 8 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 85. South wind 9 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 66. South wind 11 to 13 mph, with gusts as high as 23 mph.
Monday
Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Breezy, with a south wind 15 to 22 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 chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 85. Breezy. Chance of precipitation is 80%.
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:
1:26 am CDT May 16, 2026
Forecast Valid:
1am CDT May 16, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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