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

54°F

12°C

Humidity 88%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 21 Mar 5:15 am EDT
Extended Forecast for

4 Miles WNW Seymour TN

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Southwest wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 60. Southwest wind around 5 mph.

    Low: 60 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 58. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 8am. Partly sunny, with a high near 67. North wind around 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Northeast wind around 10 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 67. Northeast wind around 5 mph becoming calm in the morning.

    High: 67 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Southwest wind 5 to 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 60. Southwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 84. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 58. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
A 10 percent chance of showers before 8am. Partly sunny, with a high near 67. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 43. Northeast wind around 10 mph.
Tuesday
Partly sunny, with a high near 67. Northeast wind around 5 mph becoming calm in the morning.
Tuesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 48.
Wednesday
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 65.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 75.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Seymour TN
 35.88°N 83.84°W (Elev. 925 ft)
Last Update:
2:26 am EDT Mar 21, 2026
Forecast Valid:
5am 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