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, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

59°F

15°C

Humidity 62%
Wind Speed SW 7 mph
Barometer 29.95 in (1013.5 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 3:53 am EDT
Extended Forecast for

4 Miles ESE Tallassee TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 64. West wind around 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Partly cloudy, with a low around 56. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 69. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 51. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 54. North wind around 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. West wind around 15 mph, with gusts as high as 30 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 64. West wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Partly cloudy, with a low around 56. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday
Sunny, with a high near 69. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 51. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 54. North wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 40. North wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 43.
Wednesday
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 51.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 62.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 52.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Tallassee TN
 35.53°N 83.87°W (Elev. 4177 ft)
Last Update:
2:26 am EDT Mar 21, 2026
Forecast Valid:
3am 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