Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

72°F

22°C

Humidity 94%
Wind Speed E 3 mph
Barometer 30.12 in (1018.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 31 Aug 3:53 am EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Today

    Today: Sunny and hot, with a high near 93. Calm wind becoming northeast around 5 mph.

    High: 93 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 72. East wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Heat index values as high as 98. Calm wind becoming north around 5 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. East wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Calm wind.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 96. South wind around 5 mph becoming calm.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 93. Calm wind becoming northeast around 5 mph.
Tonight
Mostly clear, with a low around 72. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 95. Heat index values as high as 98. Calm wind becoming north around 5 mph.
Tuesday Night
Mostly clear, with a low around 73. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 96. Calm wind.
Wednesday Night
Partly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 96. South wind around 5 mph becoming calm.
Thursday Night
Mostly clear, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
Saturday Night
A slight chance of thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 10%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.83°N 83.98°W (Elev. 961 ft)
2:26 am EDT Aug 31, 2026
4am EDT Aug 31, 2026-6pm EDT Sep 6, 2026
 
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Additional Resources

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