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.

Partly Cloudy

83°F

28°C

Humidity	70%
Wind Speed	Vrbl 3 mph
Barometer	29.98 in (1013.6 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	5 Sep 12:53 am EDT

More Information:

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

Extended Forecast for

3 Miles SW Maryville TN

Heat Advisory September 5, 01:47am until September 5, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 5, 01:47am until September 5, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Overnight
Low: 74 °F
Mostly Clear
Saturday
High: 95 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 92 °F
Sunny then
Slight Chance
T-storms
Sunday Night
Low: 69 °F
Partly Cloudy
Labor Day
High: 89 °F
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 68 °F
Chance
T-storms then
Partly Cloudy
Tuesday
High: 90 °F
Hot

Detailed Forecast

Overnight

Mostly clear, with a low around 74. Calm wind.

Saturday

A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95. Heat index values as high as 105. Calm wind becoming northwest around 5 mph in the afternoon.

Saturday Night

A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Partly cloudy, with a low around 72. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

Sunday

A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92. Heat index values as high as 99. 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.

Labor Day

A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind.

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

Mostly sunny and hot, with a high near 90.

Tuesday Night

Partly cloudy, with a low around 68.

Wednesday

A 20 percent chance of showers before 2pm. Sunny and hot, with a high near 91.