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

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

89°F

32°C

Humidity 45%
Wind Speed NE 6 mph
Barometer 30.12 in (1019.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 2 Aug 3:53 pm CDT
Extended Forecast for

Mountainburg AR

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Northeast wind around 5 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. East wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Calm wind becoming southeast around 5 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 65. Calm wind becoming east around 5 mph.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83. Calm wind becoming east around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Calm wind becoming southeast around 5 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 68. Southeast wind around 5 mph becoming calm.

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Southeast wind around 5 mph.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Northeast wind around 5 mph.
Tonight
Mostly clear, with a low around 62. East wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82. Calm wind becoming southeast around 5 mph.
Sunday Night
Mostly cloudy, with a low around 65. Calm wind becoming east around 5 mph.
Monday
Mostly sunny, with a high near 83. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 65. Calm wind.
Tuesday
Sunny, with a high near 87. Calm wind becoming southeast around 5 mph.
Tuesday Night
Clear, with a low around 68. Southeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 89. Southeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 68. East wind around 5 mph.
Thursday
Sunny, with a high near 90. Southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 70. Southeast wind around 5 mph.
Friday
Sunny, with a high near 91. South wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainburg AR
 35.63°N 94.2°W
Last Update:
4:11 pm CDT Aug 2, 2025
Forecast Valid:
4pm CDT Aug 2, 2025-6pm CDT Aug 8, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation