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.

Mostly Cloudy

65°F

18°C

Humidity 70%
Wind Speed SW 8 mph
Barometer 29.90 in (1011.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 22 Mar 4:53 am EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Today

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

    High: 83 °F

    Sunny

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Increasing clouds, with a low around 57. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 68. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 41. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. Calm wind becoming south around 5 mph after midnight.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 70. Southwest wind 5 to 10 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers between 8am and 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 10 percent chance of showers after 5am. Increasing clouds, with a low around 57. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 68. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Increasing clouds, with a low around 41. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming light and variable in the afternoon.
Tuesday Night
Partly cloudy, with a low around 45. Calm wind becoming south around 5 mph after midnight.
Wednesday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 70. Southwest wind 5 to 10 mph.
Wednesday Night
A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.
Thursday
A slight chance of showers between 8am and 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Thursday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 74.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
Last Update:
2:26 am EDT Mar 22, 2026
Forecast Valid:
5am EDT Mar 22, 2026-6pm EDT Mar 28, 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