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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Partly Cloudy

89°F

32°C

Humidity 59%
Wind Speed S 17 G 28 mph
Barometer 29.63 in (1002.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 17 Jun 1:53 pm CDT
Extended Forecast for

Island AR

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Heat index values as high as 103. South wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind 5 to 10 mph becoming light and variable after midnight.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 103. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Juneteenth

    Juneteenth: A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 86. East wind 5 to 10 mph.

    High: 86 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 72. East wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 7am. Partly sunny, with a high near 87. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southeast wind around 5 mph.

    Low: 74 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Heat index values as high as 103. South wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 75. South wind 5 to 10 mph becoming light and variable after midnight.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 103. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Juneteenth
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 86. East wind 5 to 10 mph.
Friday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 72. East wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday
Showers likely, with thunderstorms also possible after 7am. Partly sunny, with a high near 87. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southeast wind around 5 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Showers and possibly a thunderstorm. Low around 75. Southwest wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. South wind 5 to 10 mph becoming northeast in the afternoon.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm after midnight.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Southeast wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Island AR
 35.42°N 94.12°W
Last Update:
1:50 pm CDT Jun 17, 2026
Forecast Valid:
1pm CDT Jun 17, 2026-6pm CDT Jun 23, 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