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

74°F

23°C

Humidity 94%
Wind Speed N 7 mph
Barometer 30.12 in (1018.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 9 Aug 2:53 am EDT
Extended Forecast for

Louisville TN

  • Overnight

    Overnight: Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Patchy Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind.

    High: 90 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Partly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 70. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind.
Sunday Night
Partly cloudy, with a low around 72. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Partly cloudy, with a low around 73. Chance of precipitation is 60%.
Thursday
A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Louisville TN
 35.83°N 84.04°W (Elev. 863 ft)
Last Update:
2:26 am EDT Aug 9, 2026
Forecast Valid:
3am EDT Aug 9, 2026-6pm EDT Aug 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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