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.

Mostly Cloudy

67°F

19°C

Humidity 73%
Wind Speed SW 10 mph
Barometer 30.07 in (1017.6 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 25 Dec 2:53 pm EST
Extended Forecast for

5 Miles SW Maryville TN

  • Christmas Day

    Christmas Day: Mostly cloudy, with a high near 70. Southwest wind around 5 mph.

    High: 70 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog between 2am and 4am. Otherwise, mostly cloudy, with a low around 57. Southwest wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. 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: Partly sunny, with a high near 72. Calm wind becoming southwest around 5 mph.

    High: 72 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. Calm wind becoming south around 5 mph after midnight.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 72. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 47. Breezy. Chance of precipitation is 70%.

    Low: 47 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 58. Breezy. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Christmas Day
Mostly cloudy, with a high near 70. Southwest wind around 5 mph.
Tonight
Patchy fog between 2am and 4am. Otherwise, mostly cloudy, with a low around 57. Southwest wind around 5 mph.
Friday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of showers before 1am. Cloudy, with a low around 58. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 72. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 55. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 72. 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 47. Breezy. Chance of precipitation is 70%.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 58. 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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Maryville TN
 35.7°N 84.05°W (Elev. 997 ft)
Last Update:
12:31 pm EST Dec 25, 2025
Forecast Valid:
3pm EST Dec 25, 2025-6pm EST Dec 31, 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