National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

79°F

26°C

Humidity 69%
Wind Speed Calm
Barometer 30.04 in (1015.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 11 Sep 9:53 am EDT
Extended Forecast for

3 Miles W Maryville TN

  • Today

    Today: Sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming southwest around 5 mph.

    High: 93 °F

    Hot

  • Tonight

    Tonight: Increasing clouds, with a low around 71. Southwest wind around 5 mph.

    Low: 71 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming southwest around 5 mph.
Tonight
Increasing clouds, with a low around 71. Southwest wind around 5 mph.
Saturday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 89. Calm wind.
Sunday Night
Mostly clear, with a low around 68. Calm wind.
Monday
Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Sunny and hot, with a high near 92.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Maryville TN
 35.74°N 84.02°W (Elev. 899 ft)
Last Update:
7:06 am EDT Sep 11, 2026
Forecast Valid:
10am EDT Sep 11, 2026-6pm EDT Sep 17, 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