Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

80°F

27°C

Humidity 54%
Wind Speed Calm
Barometer 30.06 in (1016.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 24 Aug 11:53 am EDT
Extended Forecast for

5 Miles NE Knoxville TN

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. North wind around 5 mph becoming calm.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Northeast wind around 5 mph becoming calm.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Calm wind.  Chance of precipitation is 40%.

    Low: 70 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Partly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Calm wind.
Tonight
Mostly clear, with a low around 60. North wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 88. Northeast wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Mostly sunny and hot, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Knoxville TN
 36.02°N 83.88°W (Elev. 1010 ft)
7:06 am EDT Aug 24, 2026
12pm EDT Aug 24, 2026-6pm EDT Aug 30, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database