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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

76°F

24°C

Humidity 47%
Wind Speed SW 13 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Mar 12:53 pm EDT
Extended Forecast for

Townsend TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of smoke. Mostly sunny, with a high near 83. West wind around 5 mph.

    High: 83 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Areas of smoke before 1am. Partly cloudy, with a low around 58. Calm wind becoming southwest around 5 mph. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 86. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 70. Northwest wind 5 to 10 mph becoming north in the afternoon.

    High: 70 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. Northeast wind around 5 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 71. Calm wind.

    High: 71 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of smoke. Mostly sunny, with a high near 83. West wind around 5 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Areas of smoke before 1am. Partly cloudy, with a low around 58. Calm wind becoming southwest around 5 mph. Chance of precipitation is 40%.
Sunday
Sunny, with a high near 86. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 70. Northwest wind 5 to 10 mph becoming north in the afternoon.
Monday Night
Partly cloudy, with a low around 42. Northeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 71. Calm wind.
Tuesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46.
Wednesday
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 68.
Wednesday Night
A 30 percent chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 50.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 78.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 55.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Townsend TN
 35.68°N 83.75°W (Elev. 1093 ft)
Last Update:
10:36 am EDT Mar 21, 2026
Forecast Valid:
1pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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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