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 Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Mostly Cloudy

61°F

16°C

Humidity 88%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 Dec 6:15 pm EST
Extended Forecast for

Mascot TN

  • Tonight

    Tonight: A chance of sprinkles before 3am, then a slight chance of showers between 3am and 4am, then a chance of sprinkles after 4am. Mostly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Christmas Day

    Christmas Day: A chance of sprinkles with a slight chance of showers before noon, then a chance of showers after 4pm. Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 68. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly before 1am. Patchy fog between 10pm and 3am. Otherwise, mostly cloudy, with a low around 58. Calm wind becoming southwest around 5 mph after midnight.

    Low: 58 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A 30 percent chance of showers. Mostly cloudy, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers, mainly before 1am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 58. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Partly sunny, with a high near 72. Southwest wind around 5 mph.

    High: 72 °F

    Partly Sunny

  • Saturday Night

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

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 37. Chance of precipitation is 80%.

    Low: 37 °F

    Showers

Detailed Forecast

Tonight
A chance of sprinkles before 3am, then a slight chance of showers between 3am and 4am, then a chance of sprinkles after 4am. Mostly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.
Christmas Day
A chance of sprinkles with a slight chance of showers before noon, then a chance of showers after 4pm. Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 68. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of showers, mainly before 1am. Patchy fog between 10pm and 3am. Otherwise, mostly cloudy, with a low around 58. Calm wind becoming southwest around 5 mph after midnight.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
A 50 percent chance of showers, mainly before 1am. Patchy fog between 1am and 3am. Otherwise, mostly 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. Southwest wind around 5 mph.
Saturday Night
Mostly cloudy, with a low around 55. Calm wind becoming southwest around 5 mph after midnight.
Sunday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 70.
Sunday Night
Showers. Low around 37. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mascot TN
 36.06°N 83.76°W (Elev. 879 ft)
Last Update:
6:06 pm EST Dec 24, 2025
Forecast Valid:
6pm EST Dec 24, 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