Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

77°F

25°C

Humidity 88%
Wind Speed Calm
Barometer 30.17 in (1020.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Aug 7:53 am EDT
Extended Forecast for

Maryville TN

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 94. Heat index values as high as 106. Calm wind becoming west around 5 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 75. North wind around 5 mph becoming calm.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 96. Heat index values as high as 105. West wind around 5 mph.

    High: 96 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 96. South wind 5 to 10 mph becoming west in the afternoon.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Partly cloudy, with a low around 73. North wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 91. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Heat index values as high as 106. Calm wind becoming west around 5 mph.
Tonight
Partly cloudy, with a low around 75. North wind around 5 mph becoming calm.
Sunday
Sunny and hot, with a high near 96. Heat index values as high as 105. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 76. South wind around 5 mph.
Monday
A 50 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. South wind 5 to 10 mph becoming west in the afternoon.
Monday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 73. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
Mostly sunny and hot, with a high near 91. Calm wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.74°N 83.96°W (Elev. 1010 ft)
7:06 am EDT Aug 15, 2026
8am EDT Aug 15, 2026-6pm EDT Aug 21, 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