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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

65°F

18°C

Humidity 78%
Wind Speed SW 13 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 21 Nov 10:53 pm EST
Extended Forecast for

5 Miles SSE Karns TN

  • Tonight

    Tonight: A chance of showers, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. North wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Calm wind.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Calm wind becoming south around 5 mph after midnight.

    Low: 50 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: Showers. High near 64. Chance of precipitation is 80%.

    High: 64 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Showers

Detailed Forecast

Tonight
A chance of showers, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 46. North wind around 5 mph becoming calm after midnight.
Sunday
Sunny, with a high near 64. Calm wind.
Sunday Night
Mostly clear, with a low around 41. Calm wind.
Monday
Partly sunny, with a high near 65. Calm wind.
Monday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Calm wind becoming south around 5 mph after midnight.
Tuesday
Showers. High near 64. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 60.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 34.
Thanksgiving Day
Sunny, with a high near 50.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Karns TN
 35.92°N 84.08°W (Elev. 951 ft)
Last Update:
6:06 pm EST Nov 21, 2025
Forecast Valid:
11pm EST Nov 21, 2025-6pm EST Nov 28, 2025
 
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