Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

78°F

26°C

Humidity	69%
Wind Speed	W 8 mph
Barometer	30.00 in (1014.4 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	20 Aug 12:53 am EDT

More Information:

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

Extended Forecast for

3 Miles WSW Knoxville TN

Overnight
Low: 71 °F
Slight Chance
T-storms
Thursday
High: 89 °F
Chance
Showers then
Slight Chance
T-storms
Thursday Night
Low: 70 °F
Showers
Likely
Friday
High: 88 °F
Showers
Likely
Friday Night
Low: 69 °F
Showers
Likely then
Partly Cloudy
Saturday
High: 89 °F
Mostly Sunny
Saturday Night
Low: 67 °F
Mostly Clear
Sunday
High: 88 °F
Mostly Sunny
Sunday Night
Low: 64 °F
Mostly Clear

Detailed Forecast

Overnight

A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 71. Calm wind.

Thursday

A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 95. West wind around 5 mph becoming south in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.

Friday Night

Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%.

Saturday

Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph.

Saturday Night

Mostly clear, with a low around 67. Northwest wind around 5 mph becoming calm.

Sunday

Mostly sunny, with a high near 88.

Sunday Night

Mostly clear, with a low around 64.

Monday

Mostly sunny, with a high near 88.