Areas of Extreme Heat and Fire Weather in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Extreme heat will continue in the interior Northwest into midweek before finally waning. Hot temperatures, dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather. Heavy rain and thunderstorms are expected across portions of the Great Basin, Rockies, and central/southern Plains. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. Read More >

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

75°F

24°C

Humidity 44%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 26 Aug 4:15 pm EDT
Extended Forecast for

Knoxville TN

  • Tonight

    Tonight: Mostly clear, with a low around 54. North wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 78 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 54. Calm wind.

    Low: 54 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph.

    High: 80 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 84. Calm wind becoming northeast around 5 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 54. North wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 54. Calm wind.
Thursday
Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph.
Thursday Night
Partly cloudy, with a low around 56. Calm wind.
Friday
Sunny, with a high near 84. Calm wind becoming northeast around 5 mph.
Friday Night
Partly cloudy, with a low around 59. Calm wind.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Labor Day
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Monday Night
A slight chance of thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville TN
 35.96°N 83.94°W (Elev. 899 ft)
1:42 pm EDT Aug 26, 2025
4pm EDT Aug 26, 2025-6pm EDT Sep 2, 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