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

Walnut Ridge Regional Airport (KARG)

Lat: 36.13°NLon: 90.92°WElev: 266ft.

Fair

82°F

28°C

Humidity 74%
Wind Speed N 3 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 4 Sep 10:56 pm CDT
Extended Forecast for

Mammoth Spring AR

  • Tonight

    Tonight: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 101. Heat index values as high as 108. Calm wind.

    High: 101 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

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

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. East northeast wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 97. Calm wind becoming east around 5 mph in the morning.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 71. Southeast wind around 5 mph becoming calm.

    Low: 71 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 101. Heat index values as high as 108. Calm wind.
Saturday Night
Mostly clear, with a low around 73. Calm wind.
Sunday
Sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 68. East northeast wind around 5 mph.
Labor Day
Sunny and hot, with a high near 97. Calm wind becoming east around 5 mph in the morning.
Monday Night
Clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 71. Southeast wind around 5 mph becoming calm.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 68.
Friday
A 20 percent chance of showers. Sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Spring AR
 36.49°N 91.55°W (Elev. 669 ft)
Last Update:
10:35 pm CDT Sep 4, 2026
Forecast Valid:
11pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation