Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

86°F

30°C

Humidity 49%
Wind Speed W 9 mph
Barometer 30.18 in (1020.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 21 Jun 12:53 pm EDT
Extended Forecast for

3 Miles W Maryville TN

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 91. Calm wind.

    High: 91 °F

    Hot

  • Tonight

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

    Low: 69 °F

    Mostly Clear

  • 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 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Monday

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

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 91. Calm wind.
Tonight
Mostly clear, with a low around 69. Calm wind.
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 71. Calm wind.
Monday
Sunny and hot, with a high near 93. Calm wind.
Monday Night
Mostly clear, with a low around 72. Calm wind.
Tuesday
Sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Partly cloudy, with a low around 72.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Maryville TN
 35.74°N 84.05°W (Elev. 997 ft)
1:16 pm EDT Jun 21, 2025
1pm EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
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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