Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

76°F

24°C

Humidity	91%
Wind Speed	Calm
Barometer	29.95 in (1012.7 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	76°F (24°C)
Last update	5 Sep 5:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

5 Miles SSW Maryville TN

Heat Advisory September 5, 06:02am until September 5, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 5, 06:02am until September 5, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Today
High: 95 °F
Sunny then
Slight Chance
T-storms
Tonight
Low: 71 °F
Chance
T-storms then
Partly Cloudy
Sunday
High: 91 °F
Sunny then
Slight Chance
T-storms
Sunday Night
Low: 69 °F
Partly Cloudy
Labor Day
High: 89 °F
Mostly Sunny
then Chance
Showers
Monday Night
Low: 68 °F
Chance
Showers then
Partly Cloudy
Tuesday
High: 90 °F
Hot
Tuesday Night
Low: 67 °F
Partly Cloudy

Detailed Forecast

Today

A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.

Sunday

A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 91. Heat index values as high as 101. Calm wind becoming north around 5 mph in the afternoon.

Sunday Night

Partly cloudy, with a low around 69. Northeast wind 5 to 10 mph becoming light after midnight.

Labor Day

A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind becoming east around 5 mph.

Monday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Southeast wind around 5 mph.

Tuesday

Sunny and hot, with a high near 90. Calm wind.

Tuesday Night

Partly cloudy, with a low around 67.

Wednesday

Sunny and hot, with a high near 91.