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

78°F

26°C

Humidity 47%
Wind Speed SW 14 mph
Barometer 29.93 in (1012.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 21 Mar 1:53 pm EDT
Extended Forecast for

3 Miles ESE Farragut 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 80. Southwest wind 5 to 10 mph.

    High: 80 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Areas of smoke before 2am. Partly cloudy, with a low around 58. Southwest wind around 5 mph.

    Low: 58 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 83. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 59. Southwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 69. West wind around 10 mph becoming north in the morning. Winds could gust as high as 20 mph.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. Northeast wind around 5 mph becoming calm in the morning.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Slight 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 80. Southwest wind 5 to 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Areas of smoke before 2am. Partly cloudy, with a low around 58. Southwest wind around 5 mph.
Sunday
Sunny, with a high near 83. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Increasing clouds, with a low around 59. Southwest wind around 10 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 69. West wind around 10 mph becoming north in the morning. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 44. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 66. Northeast wind around 5 mph becoming calm in the morning.
Tuesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 47.
Wednesday
A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.
Wednesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 50.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Farragut TN
 35.86°N 84.12°W (Elev. 833 ft)
Last Update:
2:26 pm EDT Mar 21, 2026
Forecast Valid:
2pm 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