Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

76°F

24°C

Humidity	64%
Wind Speed	Calm
Barometer	30.05 in (1016.6 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	31 Jul 10:53 am EDT

More Information:

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

Extended Forecast for

4 Miles WNW Tallassee TN

Today
High: 86 °F
Mostly Sunny
Tonight
Low: 69 °F
Mostly Cloudy
Saturday
High: 84 °F
Partly Sunny
then Showers
Likely
Saturday Night
Low: 70 °F
Showers
Sunday
High: 84 °F
Showers
Likely
Sunday Night
Low: 69 °F
Chance
T-storms then
Chance
Showers
Monday
High: 83 °F
Showers
Likely
Monday Night
Low: 68 °F
Showers
Likely then
Slight Chance
T-storms
Tuesday
High: 84 °F
Showers
Likely

Detailed Forecast

Today

Mostly sunny, with a high near 86. Calm wind.

Tonight

Mostly cloudy, with a low around 69. Calm wind becoming southeast around 5 mph.

Saturday

Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 84. South wind 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.

Saturday Night

A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 5am, then showers after 5am. Low around 70. South wind around 5 mph. Chance of precipitation is 90%.

Sunday

Showers likely, with thunderstorms also possible after 11am. Partly sunny, with a high near 84. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

Sunday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Monday

A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph. Chance of precipitation is 60%.

Monday Night

Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 68. Chance of precipitation is 60%.

Tuesday

A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 60%.

Tuesday Night

Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 69. Chance of precipitation is 60%.

Wednesday

Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 86. Chance of precipitation is 60%.

Wednesday Night

Showers and thunderstorms likely. Partly cloudy, with a low around 71. Chance of precipitation is 60%.

Thursday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.