Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

89°F

32°C

Humidity 61%
Wind Speed SW 7 mph
Barometer 29.89 in (1010.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 5 Sep 5:53 pm EDT
Extended Forecast for

4 Miles W Tallassee TN

Heat Advisory September 5, 07:06pm until September 5, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory September 5, 07:06pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 90. Heat index values as high as 98. Calm wind becoming north around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 50 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Calm wind.

    High: 88 °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 67. Calm wind becoming southeast around 5 mph.

    Low: 67 °F

    Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 66. Calm wind becoming southeast around 5 mph after midnight.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Sunday
Sunny and hot, with a high near 90. Heat index values as high as 98. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Labor Day
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Calm wind becoming southeast around 5 mph.
Tuesday
Sunny and hot, with a high near 90. Calm wind.
Tuesday Night
Partly cloudy, with a low around 66. Calm wind becoming southeast around 5 mph after midnight.
Wednesday
Sunny and hot, with a high near 90.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91. Chance of precipitation is 40%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Tallassee TN
 35.56°N 84.01°W (Elev. 1273 ft)
3:11 pm EDT Sep 5, 2026
7pm EDT Sep 5, 2026-6pm EDT Sep 12, 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