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.

Overcast

78°F

26°C

Humidity 74%
Wind Speed Vrbl 3 mph
Barometer 30.05 in (1016.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Sep 9:53 am EDT
Extended Forecast for

4 Miles NNE Louisville TN

  • Today

    Today: Sunny and hot, with a high near 92. Heat index values as high as 99. Calm wind becoming southwest around 5 mph.

    High: 92 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 92. Heat index values as high as 99. Calm wind.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind. Chance of precipitation is 90%.

    High: 88 °F

    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 66. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 80. Calm wind. Chance of precipitation is 90%.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 92. Heat index values as high as 99. Calm wind becoming southwest around 5 mph.
Tonight
Mostly clear, with a low around 70. Calm wind.
Monday
Mostly sunny and hot, with a high near 92. Heat index values as high as 99. Calm wind.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 66. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 80. Calm wind. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Thursday Night
A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 10%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Louisville TN
 35.88°N 84.03°W (Elev. 840 ft)
Last Update:
7:06 am EDT Sep 20, 2026
Forecast Valid:
10am EDT Sep 20, 2026-6pm EDT Sep 26, 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