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.

Mostly Cloudy

88°F

31°C

Humidity 54%
Wind Speed N 7 mph
Barometer 30.32 in (1025.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 16 Sep 2:53 pm EDT
Extended Forecast for

3 Miles SW Louisville TN

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 93. Heat index values as high as 98. North wind around 5 mph.

    High: 93 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 70. East wind around 5 mph becoming calm.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog between 8am and 9am. Otherwise, sunny and hot, with a high near 94. Heat index values as high as 100. Calm wind.

    High: 94 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.

    High: 94 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 93. Heat index values as high as 98. North wind around 5 mph.
Tonight
Mostly clear, with a low around 70. East wind around 5 mph becoming calm.
Thursday
Patchy fog between 8am and 9am. Otherwise, sunny and hot, with a high near 94. Heat index values as high as 100. Calm wind.
Thursday Night
Mostly clear, with a low around 71. Calm wind.
Friday
Sunny and hot, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Calm wind.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 69.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Louisville TN
 35.79°N 84.07°W (Elev. 899 ft)
Last Update:
2:26 pm EDT Sep 16, 2026
Forecast Valid:
3pm EDT Sep 16, 2026-6pm EDT Sep 22, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation