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

95°F

35°C

Humidity 37%
Wind Speed SW 15 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 20 Sep 1:56 pm CDT
Extended Forecast for

Mammoth Spring AR

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind around 5 mph.

    High: 97 °F

    Hot

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 92. Heat index values as high as 98. Calm wind becoming north northwest around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers after 3am. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 63. North northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 85. North northeast wind around 5 mph.

    High: 85 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. North northeast wind around 5 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Northeast wind around 5 mph.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind around 5 mph.
Tonight
Mostly cloudy, with a low around 69. Calm wind.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 92. Heat index values as high as 98. Calm wind becoming north northwest around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers after 3am. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 63. North northeast wind around 5 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 85. North northeast wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Sunny, with a high near 81. North northeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 81. Northeast wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 81.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 56.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Spring AR
 36.49°N 91.55°W (Elev. 669 ft)
Last Update:
2:24 pm CDT Sep 20, 2026
Forecast Valid:
2pm CDT Sep 20, 2026-6pm CDT Sep 26, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation