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.

Partly Cloudy

62°F

17°C

Humidity 80%
Wind Speed SW 6 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 25 Dec 5:53 pm EST
Extended Forecast for

4 Miles N Greenback TN

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Southwest wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 69. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 69 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 58. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind.

    High: 72 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. Calm wind becoming south around 5 mph after midnight.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 71. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 71 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 46. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Southwest wind around 5 mph.
Friday
Mostly cloudy, with a high near 69. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 58. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind.
Saturday Night
Partly cloudy, with a low around 56. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 71. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 46. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 70%.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Sunny, with a high near 37.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Sunny, with a high near 43.
Wednesday Night
Mostly clear, with a low around 24.
New Year's Day
Sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Greenback TN
 35.71°N 84.19°W (Elev. 1010 ft)
Last Update:
6:06 pm EST Dec 25, 2025
Forecast Valid:
6pm EST Dec 25, 2025-6pm EST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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