Severe Thunderstorms in the Ohio and Tennessee Valleys; Flash Flooding Possible in the Southwest

Scattered damaging winds, isolated severe hail, and a brief tornado or two are possible from the Upper Ohio to Tennessee Valleys during the late afternoon and evening. Across the Southwest, monsoonal moisture will continue to bring heavy rain and a threat for isolated to scattered flash flooding through Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

77°F

25°C

Humidity 74%
Wind Speed SW 5 mph
Barometer 29.98 in (1014.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 5 Sep 10:53 pm EDT
Extended Forecast for

2 Miles WNW Knoxville, McGhee Tyson Airport TN

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. West wind around 5 mph.  Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 76. Southeast wind around 5 mph becoming northwest in the morning.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 8pm.  Mostly cloudy, with a low around 59. North wind around 5 mph.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 77. North wind 5 to 10 mph.

    High: 77 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. Northeast wind around 5 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Northeast wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 76. Southeast wind around 5 mph becoming northwest in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 59. North wind around 5 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 77. North wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 53. Northeast wind around 5 mph.
Monday
Sunny, with a high near 79. Northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 84.
Thursday Night
Clear, with a low around 59.
Friday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Knoxville, McGhee Tyson Airport TN
 35.83°N 84.01°W (Elev. 988 ft)
7:21 pm EDT Sep 5, 2025
11pm EDT Sep 5, 2025-6pm EDT Sep 12, 2025
 
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Additional Resources

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