Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

94°F

34°C

Humidity 37%
Wind Speed S 7 mph
Barometer 29.87 in (1010.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 5 Sep 8:53 pm CDT
Extended Forecast for

Fort Smith ARSimilar City Names

Extreme Heat Warning September 6, 12:00pm until September 6, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Tonight

    Tonight: Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 104. Heat index values as high as 109. Calm wind becoming northeast around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 104 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of thunderstorms before 7pm.  Mostly clear, with a low around 78. Calm wind becoming east around 5 mph after midnight.  Chance of precipitation is 10%.

    Low: 78 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 102. Heat index values as high as 105. East wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 74. East wind 5 to 10 mph.

    Low: 74 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. East wind around 5 mph becoming calm.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. East wind 5 to 10 mph becoming light  after midnight.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 103. Calm wind becoming south around 5 mph.

    High: 103 °F

    Hot

  • Wednesday Night

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

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm.
Sunday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 104. Heat index values as high as 109. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 78. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 10%.
Labor Day
Sunny and hot, with a high near 102. Heat index values as high as 105. East wind 5 to 10 mph.
Monday Night
Clear, with a low around 74. East wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 103. East wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 75. East wind 5 to 10 mph becoming light after midnight.
Wednesday
Sunny and hot, with a high near 103. Calm wind becoming south around 5 mph.
Wednesday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 101. Calm wind becoming southwest around 5 mph.
Thursday Night
Partly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. East wind around 5 mph.
Saturday
Sunny, with a high near 99. East wind around 5 mph becoming southwest in the afternoon.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Smith ARSimilar City Names
 35.36°N 94.39°W
7:50 pm CDT Sep 5, 2026
9pm CDT Sep 5, 2026-6pm CDT Sep 12, 2026
 
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