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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 82%
Wind Speed SW 9 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 21 Sep 7:53 am EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 95. West wind around 5 mph.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 2am, then showers likely between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Low around 67. Northeast wind around 5 mph. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 64. North wind around 5 mph becoming calm after midnight. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. North wind around 5 mph. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 10%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 95. West wind around 5 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Showers and thunderstorms before 2am, then showers likely between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Low around 67. Northeast wind around 5 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 64. North wind around 5 mph becoming calm after midnight. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. North wind around 5 mph. Chance of precipitation is 50%.
Thursday Night
A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 10%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
Last Update:
6:56 am EDT Sep 21, 2026
Forecast Valid:
8am EDT Sep 21, 2026-6pm EDT Sep 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation