Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

77°F

25°C

Humidity	74%
Wind Speed	Calm
Barometer	30.03 in (1015.7 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	16 Jul 3:53 am EDT

More Information:

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

Extended Forecast for

Louisville TN

Today
High: 93 °F
Mostly Sunny
then Chance
T-storms
Tonight
Low: 74 °F
Chance
T-storms
Thursday
High: 93 °F
Chance
T-storms
Thursday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Friday
High: 92 °F
Slight Chance
T-storms then
T-storms
Likely
Friday Night
Low: 74 °F
Showers
Likely then
Chance
Showers
Saturday
High: 90 °F
Chance
T-storms then
T-storms
Likely
Saturday Night
Low: 73 °F
T-storms
Likely then
Chance
T-storms
Sunday
High: 91 °F
Slight Chance
T-storms then
Showers
Likely

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming southwest around 5 mph in the afternoon.

Tonight

A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Thursday

A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny and hot, with a high near 93. Heat index values as high as 99. Southwest wind around 5 mph. Chance of precipitation is 40%.

Thursday Night

A chance of showers and thunderstorms before 5am, then a slight chance of showers. Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Friday

Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny and hot, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

Friday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

Saturday

Showers and thunderstorms likely, mainly after 2pm. Partly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.

Saturday Night

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

Sunday

A slight chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Monday

Showers and thunderstorms likely. Mostly sunny and hot, with a high near 92. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely. Partly cloudy, with a low around 74. Chance of precipitation is 60%.

Tuesday

A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94.