National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Summer Heat Continues; Severe Weather For Northeast

A large ridge of high pressure continues to deliver summer heat w/ humidity in several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, southern Plains, Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, severe thunderstorms are in the forecast for the Northeast into the northern Mid-Atlantic for damaging winds. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

82°F

28°C

Humidity 70%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 20 Aug 8:35 pm EDT
Extended Forecast for

Knoxville TN

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 71. Southwest wind around 5 mph.

    Chance
    T-storms

    Low: 71 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny and hot, with a high near 91. Heat index values as high as 95. Southwest wind 5 to 10 mph.

    Chance
    T-storms

    High: 91 °F

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 72. Southwest wind around 5 mph.

    Chance
    T-storms

    Low: 72 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms before 11am, then a slight chance of thunderstorms between 11am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 89. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.

    T-storms
    Likely

    High: 89 °F

  • Thursday
    Night

    Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 72 °F

  • Friday

    Friday: Showers and thunderstorms. High near 87. Chance of precipitation is 80%.

    T-storms

    High: 87 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 70 °F

  • Saturday

    Saturday: Showers and thunderstorms likely. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

    T-storms
    Likely

    High: 86 °F

  • Saturday
    Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Chance
    T-storms

    Low: 70 °F

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 71. Southwest wind around 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny and hot, with a high near 91. Heat index values as high as 95. Southwest wind 5 to 10 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 72. Southwest wind around 5 mph.
Thursday
A chance of showers and thunderstorms before 11am, then a slight chance of thunderstorms between 11am and 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 89. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.
Friday
Showers and thunderstorms. High near 87. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Knoxville TN
 35.98°N 83.94°W (Elev. 942 ft)
Last Update:
2:54 pm EDT Aug 20, 2019
Forecast Valid:
8pm EDT Aug 20, 2019-6pm EDT Aug 27, 2019
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation