Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

83°F

28°C

Humidity 55%
Wind Speed NW 3 mph
Barometer 29.98 in (1014.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 26 Aug 7:53 pm EDT
Extended Forecast for

3 Miles SW Knoxville TN

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 68. Calm wind.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Calm wind becoming north around 5 mph.

    High: 89 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. Northeast wind around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 91. Northeast wind around 5 mph becoming calm.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Calm wind becoming north around 5 mph.
Friday Night
Partly cloudy, with a low around 67. Northeast wind around 5 mph.
Saturday
Sunny and hot, with a high near 91. Northeast wind around 5 mph becoming calm.
Saturday Night
Mostly clear, with a low around 68. Calm wind.
Sunday
Sunny and hot, with a high near 92.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Sunny and hot, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Knoxville TN
 35.94°N 84°W (Elev. 932 ft)
7:06 pm EDT Aug 26, 2026
8pm EDT Aug 26, 2026-6pm EDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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