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

Hazardous Weather Conditions

Current conditions at

Memphis International Airport (KMEM)

Lat: 35.06°NLon: 89.99°WElev: 253ft.

Fair

79°F

26°C

Humidity 67%
Wind Speed Calm
Barometer 30.12 in (1019.5 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Aug 5:54 am CDT
Extended Forecast for

Williston TN

Extreme Heat Warning August 15, 06:19am until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 15, 06:19am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 77. Calm wind becoming south southwest around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Heat index values as high as 110. West wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. Calm wind becoming southwest around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. West wind around 5 mph becoming north northwest in the afternoon.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. North wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming west northwest around 5 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 106. West southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 77. Calm wind becoming south southwest around 5 mph.
Sunday
Sunny and hot, with a high near 100. Heat index values as high as 110. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 79. Calm wind becoming southwest around 5 mph.
Monday
Sunny and hot, with a high near 98. West wind around 5 mph becoming north northwest in the afternoon.
Monday Night
Mostly clear, with a low around 73. North wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 96. Calm wind becoming west northwest around 5 mph.
Tuesday Night
Mostly clear, with a low around 75. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 70.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williston TN
 35.15°N 89.36°W (Elev. 499 ft)
Last Update:
6:15 am CDT Aug 15, 2026
Forecast Valid:
6am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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