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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Periods of critical fire weather will persist from the central Rockies to the central Plains through the weekend as gusty winds and low relative humidity continue. Read More >

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

39°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 20 Mar 4:55 am EDT
Extended Forecast for

Powell TN

  • Today

    Today: Mostly sunny, with a high near 73. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 59. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 70. North wind around 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Slight Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 73. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tonight
Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph.
Saturday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind around 5 mph. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 59. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 70. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 48.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 66.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Thursday
A 10 percent chance of showers. Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Powell TN
 36.03°N 83.99°W (Elev. 1070 ft)
Last Update:
2:26 am EDT Mar 20, 2026
Forecast Valid:
5am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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