Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

93°F

34°C

Humidity	47%
Wind Speed	N 8 mph
Barometer	30.11 in (1018.3 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	30 Jun 3:53 pm EDT

More Information:

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

Extended Forecast for

Maryville TN

Heat Advisory June 30, 04:37pm until July 3, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory June 30, 04:37pm until July 3, 09:00pm
NOW until 9:00pm Fri
Heat Advisory
Tonight
Low: 74 °F
Mostly Clear
Wednesday
High: 95 °F
Hot
Wednesday Night
Low: 75 °F
Slight Chance
T-storms then
Partly Cloudy
Thursday
High: 95 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 74 °F
Chance
T-storms then
Slight Chance
Showers
Friday
High: 95 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 74 °F
Slight Chance
T-storms then
Mostly Clear
Independence Day
High: 94 °F
Mostly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm.

Wednesday

Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind becoming northeast around 5 mph.

Wednesday Night

A slight chance of showers and thunderstorms between 10pm and 11pm. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm. Chance of precipitation is 20%.

Thursday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 107. Calm wind becoming northeast around 5 mph in the afternoon.

Thursday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

Friday

A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95. Calm wind.

Friday Night

A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 74. Calm wind.

Independence Day

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94.

Saturday Night

A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after 8am. Mostly sunny and hot, with a high near 93. Chance of precipitation is 50%.

Sunday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Monday

Showers and thunderstorms. High near 90. Chance of precipitation is 80%.

Monday Night

Showers and thunderstorms. Low around 72. Chance of precipitation is 80%.

Tuesday

Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 70%.