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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

76°F

24°C

Humidity 79%
Wind Speed Calm
Barometer 30.05 in (1016.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 21 Jul 2:53 am EDT
Extended Forecast for

Knoxville TN

  • Overnight

    Overnight: Mostly clear, with a low around 73. Calm wind becoming north around 5 mph.

    Mostly Clear

    Low: 73 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 94. Heat index values as high as 98. Calm wind becoming west around 5 mph in the afternoon.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 94 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 73 °F

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after noon.  Mostly sunny and hot, with a high near 92. Heat index values as high as 98. Southwest wind 5 to 10 mph.  Chance of precipitation is 20%.

    Slight Chance
    Showers then
    Slight Chance
    T-storms

    High: 92 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 76. Southwest wind 5 to 10 mph.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 76 °F

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms.  Partly sunny and hot, with a high near 90.

    Chance
    T-storms

    High: 90 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73.

    Chance
    T-storms

    Low: 73 °F

  • Monday

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

    Chance
    T-storms

    High: 86 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 71.

    Chance
    T-storms

    Low: 71 °F

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Calm wind becoming north around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Heat index values as high as 98. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm.
Saturday
A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny and hot, with a high near 92. Heat index values as high as 98. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 76. Southwest wind 5 to 10 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny and hot, with a high near 90.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Click Map For Forecast
Point Forecast:
Knoxville TN
 35.98°N 83.94°W (Elev. 942 ft)
2:56 am EDT Jul 21, 2017
3am EDT Jul 21, 2017-6pm EDT Jul 27, 2017
 
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