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

Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Mostly Cloudy

73°F

23°C

Humidity 96%
Wind Speed W 6 mph
Barometer 30.09 in (1018.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 12 Jul 5:53 am CDT
Extended Forecast for

Mountainburg AR

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming north around 5 mph.

    High: 90 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. Calm wind becoming east around 5 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind becoming east around 5 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. East wind around 5 mph becoming calm.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming north around 5 mph.
Tonight
Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm.
Monday
Sunny, with a high near 90. Calm wind becoming east around 5 mph.
Monday Night
Partly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 90. Calm wind becoming east around 5 mph.
Tuesday Night
Mostly clear, with a low around 71. East wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph.
Wednesday Night
Partly cloudy, with a low around 71. Calm wind.
Thursday
Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm.
Friday
Sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainburg AR
 35.63°N 94.17°W
Last Update:
5:50 am CDT Jul 12, 2026
Forecast Valid:
6am CDT Jul 12, 2026-6pm CDT Jul 18, 2026
 
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