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.

Mostly Cloudy

90°F

32°C

Humidity 44%
Wind Speed SW 15 G 22 mph
Barometer 30.07 in (1017.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 10 Sep 1:53 pm EDT
Extended Forecast for

Maryville TN

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 92. Heat index values as high as 96. West wind around 5 mph.

    High: 92 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 70. West wind around 5 mph becoming south in the evening.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming west around 5 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 69 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Calm wind becoming northwest around 5 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 92. Heat index values as high as 96. West wind around 5 mph.
Tonight
Partly cloudy, with a low around 70. West wind around 5 mph becoming south in the evening.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming west around 5 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms before 11pm, then a chance of showers. Low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Calm wind becoming northwest around 5 mph. Chance of precipitation is 30%.
Sunday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 68. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91.
Monday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.74°N 83.99°W (Elev. 1001 ft)
Last Update:
1:06 pm EDT Sep 10, 2026
Forecast Valid:
2pm EDT Sep 10, 2026-6pm EDT Sep 16, 2026
 
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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