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 Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

66°F

19°C

Humidity 73%
Wind Speed SW 7 mph
Barometer 29.90 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 22 Mar 12:55 am EDT
Extended Forecast for

Knoxville TN

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 2am. Areas of smoke before 2am. Mostly clear, with a low around 58. Southwest wind around 5 mph.

    Low: 58 °F

    Slight Chance
    T-storms

  • Sunday

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

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 59. Southwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 69. North wind around 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Slight Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. Northeast wind 5 to 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 afternoon.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

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

    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

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 2am. Areas of smoke before 2am. Mostly clear, with a low around 58. Southwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 83. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 59. Southwest wind around 10 mph, with gusts as high as 25 mph.
Monday
A 10 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 69. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 44. Northeast wind 5 to 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 afternoon.
Tuesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 47. Calm wind.
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. Partly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 76.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Knoxville TN
 35.96°N 83.94°W (Elev. 899 ft)
Last Update:
1:06 am EDT Mar 22, 2026
Forecast Valid:
1am 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