Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Tuesday

In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding Tuesday. Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota Tuesday afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. Extreme heat returns to the southwest U.S. 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

73°F

23°C

Humidity	94%
Wind Speed	Calm
Barometer	30.00 in (1014.6 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	7 Jul 4:53 am EDT

More Information:

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

Extended Forecast for

5 Miles SSW Maryville TN

Today
High: 87 °F
Slight Chance
T-storms then
Chance
T-storms
Tonight
Low: 72 °F
Chance
T-storms then
Partly Cloudy
Wednesday
High: 89 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 88 °F
Showers
Likely
Thursday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Friday
High: 88 °F
Showers then
T-storms
Friday Night
Low: 72 °F
T-storms
Likely then
Showers
Likely
Saturday
High: 86 °F
Showers then
T-storms

Detailed Forecast

Today

A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 87. Heat index values as high as 96. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm.

Wednesday

A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Heat index values as high as 97. Calm wind becoming west around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

Thursday

Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 5 mph. Chance of precipitation is 30%.

Friday

Showers, with thunderstorms also possible after 8am. High near 88. Southwest wind around 10 mph. Chance of precipitation is 80%.

Friday Night

Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 70%.

Saturday

Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 90%.

Saturday Night

Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.

Sunday

Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 70%.

Sunday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.