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

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

77°F

25°C

Humidity 66%
Wind Speed S 7 mph
Barometer 30.30 in (1024.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 9 Sep 9:53 am EDT
Extended Forecast for

Knoxville TN

  • Today

    Today: Sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 68. Calm wind becoming southwest around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 91. Heat index values as high as 96. Southwest wind around 5 mph.

    High: 91 °F

    Hot

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 2am. Increasing clouds, with a low around 70. Southwest wind around 5 mph becoming calm.

    Low: 70 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 92. Calm wind becoming west around 5 mph.

    High: 92 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 68. Calm wind becoming southwest around 5 mph.
Thursday
Sunny and hot, with a high near 91. Heat index values as high as 96. Southwest wind around 5 mph.
Thursday Night
A 20 percent chance of showers before 2am. Increasing clouds, with a low around 70. Southwest wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 92. Calm wind becoming west around 5 mph.
Friday Night
A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Calm wind.
Saturday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 91.
Monday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville TN
 35.98°N 83.94°W (Elev. 942 ft)
Last Update:
7:06 am EDT Sep 9, 2026
Forecast Valid:
10am EDT Sep 9, 2026-6pm EDT Sep 15, 2026
 
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