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 >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast and Breezy

71°F

22°C

Humidity 38%
Wind Speed SW 23 G 32 mph
Barometer 30.09 in (1018.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Mar 1:53 pm EDT
Extended Forecast for

2 Miles N Knoxville, McGhee Tyson Airport TN

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 73. Breezy, with a southwest wind around 20 mph, with gusts as high as 30 mph.

    High: 73 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 56. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 78. West wind around 10 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 58. Southwest wind around 10 mph.

    Low: 58 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 68. West wind 10 to 15 mph becoming north in the morning. Winds could gust as high as 20 mph.

    High: 68 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 73. Breezy, with a southwest wind around 20 mph, with gusts as high as 30 mph.
Tonight
Increasing clouds, with a low around 56. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 78. West wind around 10 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 58. Southwest wind around 10 mph.
Sunday
Sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 58. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 68. West wind 10 to 15 mph becoming north in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 45.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
Last Update:
2:26 pm EDT Mar 20, 2026
Forecast Valid:
2pm EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation