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.

Fair

75°F

24°C

Humidity 82%
Wind Speed Calm
Barometer 29.99 in (1014.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 11 Sep 2:53 am EDT
Extended Forecast for

4 Miles NNE Louisville TN

  • Overnight

    Overnight: Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 92. Heat index values as high as 97. Calm wind.

    High: 92 °F

    Hot

  • Friday Night

    Friday Night: Increasing clouds, with a low around 71. East wind around 5 mph becoming calm.

    Low: 71 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Sunday

    Sunday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Sunday Night

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

    Low: 68 °F

    Mostly Clear

  • Monday

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

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 70. Calm wind.
Friday
Sunny and hot, with a high near 92. Heat index values as high as 97. Calm wind.
Friday Night
Increasing clouds, with a low around 71. East wind around 5 mph becoming calm.
Saturday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%.
Sunday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 89. Calm wind.
Sunday Night
Mostly clear, with a low around 68. Calm wind.
Monday
Sunny and hot, with a high near 90.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny and hot, with a high near 91.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Louisville TN
 35.87°N 84.01°W (Elev. 994 ft)
Last Update:
2:26 am EDT Sep 11, 2026
Forecast Valid:
2am EDT Sep 11, 2026-6pm EDT Sep 17, 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