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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Fair

63°F

17°C

Humidity 37%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Mar 2:15 pm EDT
Extended Forecast for

Knoxville TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 65. Southwest wind around 5 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 72 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 54. Southwest wind around 5 mph.

    Low: 54 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Southwest wind around 5 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm.

    Low: 55 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    T-storms then
    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 65. Southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 39. Calm wind.
Friday
Increasing clouds, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 54. Southwest wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Southwest wind around 5 mph.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 57.
Monday
A 10 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Wednesday
Mostly cloudy, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville TN
 35.96°N 83.94°W (Elev. 899 ft)
Last Update:
2:25 pm EDT Mar 19, 2026
Forecast Valid:
2pm EDT Mar 19, 2026-6pm EDT Mar 25, 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