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.

Partly Cloudy

27°C

80°F

Humidity 58%
Wind Speed S 9 km/h
Barometer 1018.6 mb (30.12 in)
Dewpoint 18°C (64°F)
Visibility 16 km
Heat Index28°C (82°F)
Last update 9 Sep 9:53 pm EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Tonight

    Tonight: Mostly clear, with a low around 21. Southwest wind 5 to 10 km/h.

    Low: 21 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 34. West wind 5 to 15 km/h.

    High: 34 °C

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22. Southwest wind 5 to 10 km/h becoming calm after midnight.

    Low: 22 °C

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 34. Heat index values as high as 37. Calm wind.

    High: 34 °C

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Calm wind. Chance of precipitation is 40%.

    Low: 21 °C

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 32. Calm wind becoming southwest 5 to 10 km/h in the afternoon. Chance of precipitation is 80%.

    High: 32 °C

    Showers

  • Saturday Night

    Saturday 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 21. Calm wind. Chance of precipitation is 80%.

    Low: 21 °C

    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 32. Chance of precipitation is 30%.

    High: 32 °C

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 21. Southwest wind 5 to 10 km/h.
Thursday
Sunny and hot, with a high near 34. West wind 5 to 15 km/h.
Thursday Night
Partly cloudy, with a low around 22. Southwest wind 5 to 10 km/h becoming calm after midnight.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 34. Heat index values as high as 37. Calm wind.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Calm wind. Chance of precipitation is 40%.
Saturday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 32. Calm wind becoming southwest 5 to 10 km/h in the afternoon. Chance of precipitation is 80%.
Saturday 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 21. Calm wind. Chance of precipitation is 80%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 32. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 21.
Monday
Sunny and hot, with a high near 33.
Monday Night
Mostly clear, with a low around 21.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 34.
Tuesday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 21.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.8°N 83.98°W (Elev. 955 m)
Last Update:
7:06 pm EDT Sep 9, 2026
Forecast Valid:
10pm EDT Sep 9, 2026-6pm EDT Sep 16, 2026
 
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Additional Resources

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Chance of Precipitation