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

71°F

22°C

Humidity 96%
Wind Speed Calm
Barometer 30.08 in (1017.6 mb)
Dewpoint 70°F (21°C)
Visibility 2.00 mi
Last update 13 Sep 8:53 am EDT
Extended Forecast for

Knoxville TN

  • Today

    Today: Areas of fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind.

    High: 90 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Northeast wind around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Hot

  • Tuesday Night

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

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind.
Tonight
Mostly clear, with a low around 69. Calm wind.
Monday
Partly sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. Northeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 93. Calm wind.
Tuesday Night
Mostly clear, with a low around 70. Calm wind.
Wednesday
Sunny and hot, with a high near 93. Calm wind.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Sunny and hot, with a high near 94.
Thursday Night
Mostly clear, with a low around 69.
Friday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Saturday
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:
Knoxville TN
 35.96°N 83.94°W (Elev. 899 ft)
Last Update:
7:06 am EDT Sep 13, 2026
Forecast Valid:
9am EDT Sep 13, 2026-6pm EDT Sep 19, 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