Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

88°F

31°C

Humidity 79%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 81°F (27°C)
Visibility 9.00 mi
Heat Index106°F (41°C)
Last update 30 Jun 11:55 am EDT
Extended Forecast for

3 Miles N Seymour TN

Heat Advisory until July 2, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 2, 09:00pm

    NOW until 9:00pm Thu

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Hot

  • Tonight

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

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95. Heat index values as high as 104. Calm wind.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 96. Calm wind becoming northeast around 5 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Mostly clear, with a low around 74. East wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 95. Calm wind.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 94. Heat index values as high as 101. Calm wind.
Tonight
Mostly clear, with a low around 74. Calm wind.
Wednesday
Sunny and hot, with a high near 95. Heat index values as high as 104. Calm wind.
Wednesday Night
Mostly clear, with a low around 75. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. Calm wind becoming northeast around 5 mph.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly clear, with a low around 74. East wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95. Calm wind.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73.
Independence Day
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 40%.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
Showers and thunderstorms likely. Mostly sunny and hot, with a high near 90. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Seymour TN
 35.93°N 83.78°W (Elev. 906 ft)
11:30 am EDT Jun 30, 2026
12pm EDT Jun 30, 2026-6pm EDT Jul 6, 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