Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

94°F

34°C

Humidity 56%
Wind Speed NE 5 mph
Barometer 29.96 in (1013.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 30 Jul 12:53 pm CDT
Extended Forecast for

Fort Smith AR

Heat Advisory until July 30, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 30, 09:00pm

    NOW until 9:00pm Thu

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 77. East wind 5 to 10 mph.

    Low: 77 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 99. Heat index values as high as 107. East wind 5 to 10 mph becoming southwest in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming northwest after midnight.

    Low: 75 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91. North wind 5 to 10 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. Northeast wind 5 to 10 mph becoming light  after midnight.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

This Afternoon
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 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 77. East wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 99. Heat index values as high as 107. East wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 90. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 71. North wind 5 to 10 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 72. Northeast wind 5 to 10 mph becoming light after midnight.
Monday
Sunny, with a high near 93. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 73. East wind around 5 mph.
Tuesday
Sunny, with a high near 96. East wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Fort Smith AR
 35.38°N 94.39°W
12:50 pm CDT Jul 30, 2026
12pm CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database