Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

73°F

23°C

Humidity 87%
Wind Speed S 5 mph
Barometer 30.19 in (1021.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 8 Aug 8:53 am EDT
Extended Forecast for

Alcoa TN

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of thunderstorms before 8pm.  Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind.  Chance of precipitation is 30%.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 73. South wind around 5 mph becoming calm.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 11am.  Partly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 40%.

    High: 91 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms.  Mostly sunny and hot, with a high near 91. West wind around 5 mph.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 73. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Showers
    Likely

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 73. South wind around 5 mph becoming calm.
Monday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 73. South wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. West wind around 5 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 50%.
Wednesday
A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Alcoa TN
 35.78°N 83.99°W (Elev. 869 ft)
7:06 am EDT Aug 8, 2026
9am EDT Aug 8, 2026-6pm EDT Aug 14, 2026
 
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Additional Resources

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