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

Hazardous Weather Conditions

Current conditions at

Walnut Ridge Regional Airport (KARG)

Lat: 36.13°NLon: 90.92°WElev: 266ft.

Fair

99°F

37°C

Humidity 41%
Wind Speed E 6 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Heat Index108°F (42°C)
Last update 18 Aug 3:56 pm CDT
Extended Forecast for

Mammoth Spring AR

Heat Advisory August 19, 12:00pm until August 19, 08:00pm
Heat Advisory August 18, 04:05pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
Heat Advisory
  •  
    Heat Advisory August 18, 04:05pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 103 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Sunny and hot, with a high near 101. Heat index values as high as 112. Calm wind.

    High: 101 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 50%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 93. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 93 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 91. North northeast wind around 5 mph.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. East northeast wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 103. Heat index values as high as 113. Calm wind.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 73. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Sunny and hot, with a high near 101. Heat index values as high as 112. Calm wind.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 50%.
Wednesday
A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 93. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 91. North northeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 67. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 93. Calm wind becoming northeast around 5 mph.
Friday Night
Clear, with a low around 66.
Saturday
Sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 61.
Monday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Spring AR
 36.49°N 91.52°W (Elev. 502 ft)
Last Update:
3:35 pm CDT Aug 18, 2025
Forecast Valid:
4pm CDT Aug 18, 2025-6pm CDT Aug 25, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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