Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

88°F

31°C

Humidity 63%
Wind Speed Calm
Barometer 29.83 in (1009.3 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 28 Jul 10:53 pm CDT
Extended Forecast for

Fort Smith Regional Airport AR

Heat Advisory July 29, 12:00pm until July 29, 09:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Partly cloudy, with a low around 78. Calm wind.

    Low: 78 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 99. Heat index values as high as 110. Calm wind becoming east around 5 mph in the afternoon.

    High: 99 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 77. East wind 5 to 10 mph.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 95. Heat index values as high as 105. East wind around 10 mph.

    High: 95 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. East wind 5 to 10 mph.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 99. East wind 5 to 10 mph becoming southwest in the afternoon.

    High: 99 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Mostly clear, with a low around 76. West wind 5 to 10 mph becoming northwest after midnight.  Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 92. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 78. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 99. Heat index values as high as 110. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. East wind 5 to 10 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 95. Heat index values as high as 105. East wind around 10 mph.
Thursday Night
Partly cloudy, with a low around 76. East wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 99. East wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 76. West wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 92. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 71. North wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 91. North wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 70. North wind 5 to 10 mph becoming light northeast in the evening.
Monday
Sunny, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 73. East wind around 5 mph.
Tuesday
Sunny, with a high near 97. East wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Smith Regional Airport AR
 35.34°N 94.37°W
10:50 pm CDT Jul 28, 2026
10pm CDT Jul 28, 2026-6pm CDT Aug 4, 2026
 
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