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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

65°F

18°C

Humidity 78%
Wind Speed SW 13 mph
Barometer 30.15 in (1020.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 25 Dec 9:53 am EST
Extended Forecast for

3 Miles ENE Slickrock Wilderness NC

  • Christmas Day

    Christmas Day: A 30 percent chance of showers, mainly after 5pm. Partly sunny, with a high near 64. West northwest wind around 7 mph.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 50. West northwest wind around 6 mph becoming light and variable.

    Low: 50 °F

    Chance
    Showers then
    Patchy Fog

  • Friday

    Friday: A 30 percent chance of rain, mainly after 3pm. Patchy fog between 8am and 10am. Otherwise, partly sunny, with a high near 64. South southwest wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 64 °F

    Patchy Fog
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 53. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Light west wind.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain. Low around 36. Chance of precipitation is 80%.

    Low: 36 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain likely, mainly before 9am. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.

    High: 51 °F

    Rain Likely

Detailed Forecast

Christmas Day
A 30 percent chance of showers, mainly after 5pm. Partly sunny, with a high near 64. West northwest wind around 7 mph.
Tonight
A 30 percent chance of showers, mainly before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 50. West northwest wind around 6 mph becoming light and variable.
Friday
A 30 percent chance of rain, mainly after 3pm. Patchy fog between 8am and 10am. Otherwise, partly sunny, with a high near 64. South southwest wind 6 to 10 mph, with gusts as high as 22 mph.
Friday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 53. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 67. Light west wind.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly cloudy, with a high near 66.
Sunday Night
Rain. Low around 36. Chance of precipitation is 80%.
Monday
Rain likely, mainly before 9am. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 13. Blustery.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Clear, with a low around 15.
Wednesday
Sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Slickrock Wilderness NC
 35.39°N 83.92°W (Elev. 3484 ft)
Last Update:
6:05 am EST Dec 25, 2025
Forecast Valid:
10am EST Dec 25, 2025-6pm EST Dec 31, 2025
 
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Additional Resources

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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