Areas of Thunderstorms and Heavy Rain Across the Country; Heat Wave Begins This Weekend

Widespread showers and thunderstorms, some severe, may bring heavy rain and flash flooding in the central Gulf Coast, Mid-Atlantic, the Upper Midwest, the Great Basin and Southwest. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend. Critical fire weather conditions are expected in the Northwest and Great Basin. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Overcast

82°F

28°C

Humidity	74%
Wind Speed	Calm
Barometer	30.08 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	17 Jul 9:55 pm EDT

More Information:

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

Extended Forecast for

5 Miles ESE Karns TN

Tonight
Low: 74 °F
Heavy Rain
Friday
High: 90 °F
Chance
Showers then
T-storms
Likely
Friday Night
Low: 73 °F
T-storms
Likely
Saturday
High: 88 °F
Chance
T-storms then
T-storms
Likely
Saturday Night
Low: 73 °F
T-storms
Likely then
Chance
Showers
Sunday
High: 91 °F
Slight Chance
T-storms then
T-storms
Likely
Sunday Night
Low: 74 °F
T-storms
Likely then
Chance
T-storms
Monday
High: 91 °F
Slight Chance
T-storms then
T-storms
Likely
Monday Night
Low: 73 °F
T-storms
Likely then
Slight Chance
T-storms

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms before 1am. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 74. Calm wind.

Friday

Showers and thunderstorms likely, mainly after 5pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 98. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 88. Heat index values as high as 95. Southwest wind 5 to 10 mph. Chance of precipitation is 70%.

Saturday Night

Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Southwest wind around 5 mph. Chance of precipitation is 60%.

Sunday

A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny and hot, with a high near 91. Southwest wind around 5 mph. Chance of precipitation is 60%.

Sunday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

Monday

Showers and thunderstorms likely, mainly after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Tuesday

A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 92.

Tuesday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.

Wednesday

A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.

Wednesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.