Areas of Excessive Rainfall and Extreme Heat; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding Tuesday. Hot to extremely hot temperatures are in place through Tuesday across much of the western U.S. and northern New England. Tropical Storm Erin is forecast to become a Major Hurricane by this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Knoxville Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Partly Cloudy

72°F

22°C

Humidity	100%
Wind Speed	Calm
Barometer	30.08 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	12 Aug 3:15 am EDT

More Information:

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

Extended Forecast for

Mascot TN

Overnight
Low: 71 °F
Chance
Sprinkles
Tuesday
High: 87 °F
Chance
Showers then
T-storms
Likely
Tuesday Night
Low: 71 °F
Chance
T-storms
Wednesday
High: 87 °F
Chance
T-storms and
Patchy Fog
then Showers
Likely
Wednesday Night
Low: 71 °F
Showers
Likely then
Chance
T-storms
Thursday
High: 89 °F
Slight Chance
Showers then
Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 92 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 72 °F
Slight Chance
T-storms then
Mostly Clear

Detailed Forecast

Overnight

A chance of sprinkles after 5am. Partly cloudy, with a low around 71. Calm wind.

Tuesday

Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 87. Heat index values as high as 95. Calm wind becoming south 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.

Tuesday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 87. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 60%.

Wednesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 71. West wind around 5 mph becoming calm. Chance of precipitation is 60%.

Thursday

A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 89. Calm wind becoming west around 5 mph. Chance of precipitation is 40%.

Thursday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Calm wind.

Friday

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92.

Friday Night

A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.

Saturday

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93.

Saturday Night

A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.

Sunday

Mostly sunny and hot, with a high near 93.