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

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

87°F

31°C

Humidity 53%
Wind Speed Vrbl 3 mph
Barometer 30.30 in (1024.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Sep 12:53 pm EDT
Extended Forecast for

Knoxville TN

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 95. Heat index values as high as 103. Calm wind.

    High: 95 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 103. Calm wind.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Calm wind.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 95. Heat index values as high as 103. Calm wind.
Tonight
Partly cloudy, with a low around 72. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 103. Calm wind.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Calm wind.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Calm wind.
Sunday
Mostly sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 70.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.
Monday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny and hot, with a high near 90. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Knoxville TN
 35.96°N 83.94°W (Elev. 899 ft)
Last Update:
7:06 am EDT Sep 17, 2026
Forecast Valid:
1pm EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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