National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

67°F

19°C

Humidity 91%
Wind Speed N 3 mph
Barometer 30.14 in (1019.4 mb)
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 20 May 6:53 am EDT
Extended Forecast for

4 Miles SE Karns TN

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 82. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 65. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 11am. High near 83. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 83 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 66. South wind around 5 mph. Chance of precipitation is 90%.

    Low: 66 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 90%.

    High: 81 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 90%.

    High: 83 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 82. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 65. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.
Friday
Showers, with thunderstorms also possible after 11am. High near 83. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm. Low around 66. South wind around 5 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm. High near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Sunday
A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 80%.
Memorial Day
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 90%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Karns TN
 35.94°N 84.05°W (Elev. 974 ft)
Last Update:
7:06 am EDT May 20, 2026
Forecast Valid:
7am EDT May 20, 2026-6pm EDT May 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation