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.

Mostly Cloudy

90°F

32°C

Humidity 44%
Wind Speed SW 15 G 22 mph
Barometer 30.07 in (1017.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 10 Sep 1:53 pm EDT
Extended Forecast for

3 Miles NNW Louisville TN

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 92. Heat index values as high as 95. Southwest wind around 5 mph.

    High: 92 °F

    Hot

  • Tonight

    Tonight: Increasing clouds, with a low around 70. Calm wind.

    Low: 70 °F

    Increasing
    Clouds

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. Heat index values as high as 98. Calm wind.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Calm wind. Chance of precipitation is 80%.

    Low: 69 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 92. Heat index values as high as 95. Southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 70. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 92. Heat index values as high as 98. Calm wind.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Calm wind. Chance of precipitation is 80%.
Sunday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny and hot, with a high near 90.
Monday Night
Mostly clear, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 91.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 69.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Louisville TN
 35.85°N 84.06°W (Elev. 899 ft)
Last Update:
1:06 pm EDT Sep 10, 2026
Forecast Valid:
2pm EDT Sep 10, 2026-6pm EDT Sep 16, 2026
 
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Additional Resources

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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