Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

74°F

23°C

Humidity 85%
Wind Speed Calm
Barometer 30.08 in (1017.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 4 Jul 7:53 am EDT
Extended Forecast for

4 Miles W Tallassee TN

Heat Advisory July 4, 08:54am until July 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 4, 08:54am until July 4, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Independence Day

    High: 93 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am.  Partly cloudy, with a low around 73. Calm wind.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 5pm.  Mostly sunny and hot, with a high near 91. Heat index values as high as 99. Calm wind.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Sunny then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 7pm.  Partly cloudy, with a low around 72. Calm wind.  Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, then showers and thunderstorms likely after 11am.  Mostly sunny, with a high near 89. Calm wind.  Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Partly cloudy, with a low around 71. Calm wind.  Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm.  High near 87. Calm wind.  Chance of precipitation is 80%.

    High: 87 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am.  Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms then
    Chance
    T-storms

Detailed Forecast

Independence Day
A 40 percent chance of showers and thunderstorms, mainly after 11am. Mostly sunny and hot, with a high near 93. Heat index values as high as 103. Calm wind.
Tonight
Showers and thunderstorms likely, mainly before 2am. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly after 5pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 99. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Monday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%.
Tuesday
A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Calm wind. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 71. Chance of precipitation is 80%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 40%.
Thursday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Friday
Showers and thunderstorms. High near 87. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Tallassee TN
 35.56°N 84.01°W (Elev. 1273 ft)
8:01 am EDT Jul 4, 2026
8am EDT Jul 4, 2026-6pm EDT Jul 10, 2026
 
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Additional Resources

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