Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

79°F

26°C

Humidity 77%
Wind Speed Calm
Barometer 30.03 in (1015.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 22 Aug 10:53 am EDT
Extended Forecast for

2 Miles ENE Lenoir City TN

  • Today

    Today: Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming west around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm.  Mostly clear, with a low around 64. West wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 2am.  Partly cloudy, with a low around 62. Northeast wind around 5 mph becoming calm.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm.  Mostly sunny, with a high near 87. Northeast wind around 5 mph becoming calm.

    High: 87 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

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

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming west around 5 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 64. West wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 87. Calm wind.
Monday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 62. Northeast wind around 5 mph becoming calm.
Tuesday
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 87. Northeast wind around 5 mph becoming calm.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Lenoir City TN
 35.82°N 84.23°W (Elev. 810 ft)
7:06 am EDT Aug 22, 2026
11am EDT Aug 22, 2026-6pm EDT Aug 28, 2026
 
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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