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

58°F

14°C

Humidity 93%
Wind Speed SW 5 mph
Barometer 30.07 in (1017.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 25 Dec 11:53 pm EST
Extended Forecast for

4 Miles SSW Townsend TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. Southwest wind around 5 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 2pm.  Partly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly between 10pm and 1am.  Mostly cloudy, with a low around 57. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 57 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 66. West wind around 5 mph becoming calm.

    High: 66 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. South wind 5 to 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm.  Mostly cloudy, with a high near 66. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly after 1am.  Low around 42. Windy, with a south wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 55 mph.  Chance of precipitation is 80%.

    Low: 42 °F

    Chance
    Showers and
    Breezy then
    Showers and
    Windy

  • Monday

    Monday: Rain showers before 2pm, then a chance of rain and snow showers.  High near 55. Windy.  Chance of precipitation is 80%.

    High: 55 °F

    Showers and
    Windy then
    Rain/Snow and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of snow showers, mainly before 7pm.  Partly cloudy, with a low around 21. Windy.

    Low: 21 °F

    Chance Snow
    Showers and
    Windy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. Southwest wind around 5 mph.
Friday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
A 30 percent chance of showers, mainly between 10pm and 1am. Mostly cloudy, with a low around 57. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 66. West wind around 5 mph becoming calm.
Saturday Night
Partly cloudy, with a low around 56. South wind 5 to 10 mph.
Sunday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 66. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Showers, mainly after 1am. Low around 42. Windy, with a south wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 80%.
Monday
Rain showers before 2pm, then a chance of rain and snow showers. High near 55. Windy. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 21. Windy.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 26.
New Year's Day
Mostly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Townsend TN
 35.63°N 83.78°W (Elev. 2028 ft)
12:31 am EST Dec 26, 2025
12am EST Dec 26, 2025-6pm EST Jan 1, 2026
 
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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