Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

78°F

26°C

Humidity	87%
Wind Speed	N 8 mph
Barometer	29.75 in (1006.3 mb)
Dewpoint	74°F (23°C)
Visibility	9.00 mi
Heat Index	80°F (27°C)
Last update	1 Aug 4:53 pm EDT

More Information:

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

Extended Forecast for

4 Miles ESE Greenback TN

This Afternoon
High: 87 °F
Chance
T-storms
Tonight
Low: 71 °F
T-storms
Likely then
Showers
Sunday
High: 85 °F
Chance
Showers then
Chance
T-storms
Sunday Night
Low: 70 °F
Chance
T-storms then
Chance
Showers
Monday
High: 83 °F
Chance
T-storms then
T-storms
Monday Night
Low: 68 °F
T-storms then
Slight Chance
Showers
Tuesday
High: 84 °F
Chance
T-storms then
T-storms
Tuesday Night
Low: 69 °F
T-storms then
Slight Chance
T-storms
Wednesday
High: 86 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. South wind around 10 mph.

Tonight

Showers and thunderstorms before 5am, then a chance of showers. Low around 71. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 85. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Monday

A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.

Monday Night

Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Low around 68. Calm wind. Chance of precipitation is 80%.

Tuesday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 84. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%.

Tuesday Night

Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 69. Chance of precipitation is 80%.

Wednesday

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 86. Chance of precipitation is 60%.

Wednesday Night

Showers likely before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 60%.

Thursday

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

Thursday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

Friday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

Friday Night

A chance of thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

Saturday

A chance of showers and thunderstorms. Mostly sunny, with a high near 89.