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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

91°F

33°C

Humidity 57%
Wind Speed NE 7 mph
Barometer 30.07 in (1017.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 15 Aug 10:53 am CDT
Extended Forecast for

South Fort Smith AR

Heat Advisory August 15, 12:00pm until August 15, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 99. Heat index values as high as 106. East wind around 5 mph becoming south in the afternoon.

    High: 99 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 99. Heat index values as high as 107. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 100. Calm wind becoming southeast around 5 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 99. Calm wind becoming south around 5 mph.

    High: 99 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 99. Heat index values as high as 106. East wind around 5 mph becoming south in the afternoon.
Tonight
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 99. Heat index values as high as 107. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 100. Calm wind becoming southeast around 5 mph.
Monday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 99. Calm wind becoming south around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. East wind around 5 mph becoming calm.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Fort Smith AR
 35.34°N 94.42°W
Last Update:
10:50 am CDT Aug 15, 2025
Forecast Valid:
11am CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation