Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

87°F

31°C

Humidity 51%
Wind Speed Calm
Barometer 30.14 in (1019.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 29 Aug 1:53 pm EDT
Extended Forecast for

5 Miles SW Maryville TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm.  Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind.

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 69. South wind around 5 mph becoming calm  after midnight.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. South wind around 5 mph becoming calm.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. Calm wind.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °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 73.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny and hot, with a high near 90. Heat index values as high as 96. Calm wind.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. South wind around 5 mph becoming calm after midnight.
Sunday
Sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind.
Sunday Night
Mostly clear, with a low around 70. South wind around 5 mph becoming calm.
Monday
Sunny and hot, with a high near 92. Calm wind.
Monday Night
Mostly clear, with a low around 71. Calm wind.
Tuesday
Sunny and hot, with a high near 93. Calm wind.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95.
Thursday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 72.
Friday
A 40 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Maryville TN
 35.7°N 84.05°W (Elev. 997 ft)
2:26 pm EDT Aug 29, 2026
2pm EDT Aug 29, 2026-6pm EDT Sep 4, 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