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 >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

80°F

27°C

Humidity 69%
Wind Speed W 5 mph
Barometer 30.04 in (1016.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 21 Aug 12:53 pm EDT
Extended Forecast for

2 Miles SSW Lenoir City TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming west around 5 mph.

    High: 88 °F

    Chance
    T-storms

  • Tonight

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

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. West wind around 5 mph becoming calm.

    Low: 65 °F

    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: Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming west around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Calm wind.
Saturday
Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph.
Saturday Night
Mostly clear, with a low around 65. West wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 86. Calm wind.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 85.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lenoir City TN
 35.78°N 84.29°W (Elev. 801 ft)
1:06 pm EDT Aug 21, 2026
1pm EDT Aug 21, 2026-6pm EDT Aug 27, 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