National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Thunderstorm in Vicinity Rain Fog/Mist

71°F

22°C

Humidity 94%
Wind Speed SW 3 mph
Barometer 29.51 in (998.7 mb)
Dewpoint 69°F (21°C)
Visibility 1.75 mi
Last update 17 Jun 9:53 pm CDT
Extended Forecast for

Martinsville IL

Tornado Watch June 17, 09:59pm until June 18, 12:00am
Click here for hazard details and duration
Tornado Watch
  •  
    Tornado Watch June 17, 09:59pm until June 18, 12:00am

    NOW until 12:00am Thu

    Tornado Watch

  • Tonight

    Low: 65 °F

    Heavy Rain
    and Breezy
    then Severe
    Thunderstorms

  • Thursday

    Thursday: Mostly sunny, with a high near 77. West wind around 11 mph, with gusts as high as 21 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 79. Northwest wind 3 to 8 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Southwest wind 3 to 6 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 1am. Some of the storms could be severe and produce heavy rainfall. Low around 65. Breezy, with a west southwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Mostly sunny, with a high near 77. West wind around 11 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 58. West northwest wind 5 to 7 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 79. Northwest wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 82. Southwest wind 3 to 6 mph.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64. Calm wind becoming east southeast around 5 mph after midnight.
Sunday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 64. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martinsville IL
 39.36°N 87.88°W (Elev. 610 ft)
Last Update:
9:21 pm CDT Jun 17, 2026
Forecast Valid:
9pm CDT Jun 17, 2026-6pm CDT Jun 24, 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