Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

85°F

29°C

Humidity	70%
Wind Speed	Vrbl 3 mph
Barometer	30.05 in (1016.3 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	93°F (34°C)
Last update	13 Aug 11:53 am EDT

More Information:

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

Extended Forecast for

Knoxville, McGhee Tyson Airport TN

This Afternoon
High: 91 °F
Chance
T-storms
Tonight
Low: 75 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 93 °F
Slight Chance
Showers then
Chance
T-storms
Friday Night
Low: 75 °F
Partly Cloudy
Saturday
High: 94 °F
Mostly Sunny
then Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms then
Slight Chance
Showers
Sunday
High: 95 °F
Hot
Sunday Night
Low: 76 °F
Partly Cloudy
Monday
High: 96 °F
Sunny then
Slight Chance
T-storms

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny and hot, with a high near 91. Heat index values as high as 98. Southwest wind around 5 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.

Friday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.

Friday Night

Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.

Saturday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Calm wind becoming west around 5 mph.

Saturday 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 75. Calm wind. Chance of precipitation is 30%.

Sunday

Sunny and hot, with a high near 95. Calm wind becoming southwest around 5 mph in the afternoon.

Sunday Night

Partly cloudy, with a low around 76.

Monday

A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.

Monday Night

A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 75. Chance of precipitation is 40%.

Tuesday

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

Tuesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Wednesday

A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.