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.

Thunderstorm

74°F

23°C

Humidity 50%
Wind Speed S 12 mph
Barometer 29.85 in (1009.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Mar 6:53 pm EDT
Extended Forecast for

3 Miles S Tallassee TN

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 10pm.  Areas of smoke before 2am. Partly cloudy, with a low around 60. Southwest wind around 5 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 58. Southwest wind around 10 mph, with gusts as high as 30 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 67. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Decreasing
    Clouds

  • 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 65. East wind around 5 mph becoming west in the afternoon.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 2am.  Mostly cloudy, with a low around 47. Light south wind becoming southeast 5 to 10 mph in the evening.

    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 65.

    High: 65 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly before 10pm. Areas of smoke before 2am. Partly cloudy, with a low around 60. Southwest wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 58. Southwest wind around 10 mph, with gusts as high as 30 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 67. West wind around 10 mph becoming north in the afternoon. Winds could gust 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 65. East wind around 5 mph becoming west in the afternoon.
Tuesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 47. Light south wind becoming southeast 5 to 10 mph in the evening.
Wednesday
A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 65.
Wednesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 51.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 75.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 58.
Friday
A 20 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 45.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Tallassee TN
 35.51°N 83.93°W (Elev. 1939 ft)
7:01 pm EDT Mar 21, 2026
7pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
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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