Showers and Storms in the East; Dangerously Hot and Dry in the West

A frontal boundary will bring scattered showers and storms to portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Intermountain West and expand into the Central U.S. by early next week. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

85°F

29°C

Humidity 59%
Wind Speed Calm
Barometer 29.99 in (1014.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 6 Aug 12:53 am CDT
Extended Forecast for

Mountainburg AR

  • Overnight

    Overnight: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 73. South wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, then gradually becoming sunny, with a high near 94. Heat index values as high as 100. Calm wind becoming south around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 71. South wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Calm wind.
Thursday
Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, then gradually becoming sunny, with a high near 94. Heat index values as high as 100. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 72. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 73. South wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Light southeast wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 73. South wind 5 to 10 mph becoming light southeast after midnight.
Tuesday
Sunny, with a high near 93. Light southeast wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 74. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 92. Light south wind becoming southwest 5 to 10 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainburg AR
 35.63°N 94.2°W
1:50 am CDT Aug 6, 2026
1am CDT Aug 6, 2026-6pm CDT Aug 12, 2026
 
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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