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

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

79°F

26°C

Humidity 82%
Wind Speed Calm
Barometer 30.07 in (1017.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 4 Sep 8:53 am EDT
Extended Forecast for

Lenoir City TN

Heat Advisory September 4, 09:34am until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 4, 09:34am until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 96 °F

    Hot

  • Tonight

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

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms between 3pm and 5pm. Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 10%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.

    High: 92 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. North wind around 5 mph becoming calm after midnight.

    Low: 69 °F

    Partly Cloudy

  • Labor Day

    Labor Day: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Today
Sunny and hot, with a high near 96. Heat index values as high as 106. Calm wind.
Tonight
Mostly clear, with a low around 74. Calm wind.
Saturday
A slight chance of showers and thunderstorms between 3pm and 5pm. Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 10%.
Sunday
Sunny and hot, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 69. North wind around 5 mph becoming calm after midnight.
Labor Day
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68.
Tuesday
Mostly sunny and hot, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny and hot, with a high near 91.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lenoir City TN
 35.8°N 84.26°W (Elev. 879 ft)
Last Update:
7:06 am EDT Sep 4, 2026
Forecast Valid:
9am EDT Sep 4, 2026-6pm EDT Sep 10, 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