Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

78°F

26°C

Humidity 69%
Wind Speed SW 15 mph
Barometer 29.83 in (1008.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 May 7:53 pm EDT
Extended Forecast for

Knoxville, McGhee Tyson Airport TN

  • Tonight

    Tonight: Rain and thunderstorms before 4am, then showers and thunderstorms likely, mainly between 4am and 5am.  Low around 66. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    Mostly Cloudy
    then T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 8am.  Cloudy through mid morning, then gradual clearing, with a high near 84. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Chance
    T-storms then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. Southwest wind 5 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 30%.

    High: 82 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 63. Calm wind.  Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 8am.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
Rain and thunderstorms before 4am, then showers and thunderstorms likely, mainly between 4am and 5am. Low around 66. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 30 percent chance of showers and thunderstorms before 8am. Cloudy through mid morning, then gradual clearing, with a high near 84. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 62. Southwest wind 5 to 10 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.
Monday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.
Monday Night
A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 84.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 69.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 50.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville, McGhee Tyson Airport TN
 35.81°N 84.01°W (Elev. 899 ft)
7:58 pm EDT May 16, 2025
8pm EDT May 16, 2025-6pm EDT May 23, 2025
 
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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