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 >

Hazardous Weather Conditions

Current conditions at

SISTERS (K6K5)

Lat: 44.30445°NLon: 121.53909°WElev: 3168.0ft.

NA

36°F

2°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.52 in (999.66 mb)
Dewpoint 34°F (1°C)
Visibility NA
Last update 24 Dec 11:55 AM PST
Extended Forecast for

9 Miles NNW Mount Bachelor OR

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 29. Windy, with a southwest wind around 31 mph, with gusts as high as 44 mph.

    High: 29 °F

    Partly Sunny
    and Windy

  • Tonight

    Tonight: A 50 percent chance of snow, mainly after 1am.  Mostly cloudy, with a temperature rising to around 22 by 5am. Wind chill values as low as zero. Breezy, with a south wind 18 to 22 mph, with gusts as high as 32 mph.  New snow accumulation of around an inch possible.

    Low: 17 °F

    Slight Chance
    Snow then
    Chance Snow
    and Breezy

  • Christmas Day

    Christmas Day: Snow likely, mainly between 7am and 1pm.  Mostly cloudy, with a temperature falling to around 19 by 3pm. Wind chill values as low as -1. Windy, with a south wind 32 to 37 mph, with gusts as high as 45 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 23 °F

    Snow Likely
    and Windy

  • Thursday Night

    Thursday Night: Snow, mainly after 7pm.  Low around 17. Wind chill values as low as -3. Windy, with a south wind around 30 mph, with gusts as high as 34 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 17 °F

    Snow and
    Windy

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 19. Windy, with a southwest wind 34 to 37 mph, with gusts as high as 43 mph.  Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 19 °F

    Heavy Snow
    and Windy

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times.  Low around 11. Windy.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 11 °F

    Heavy Snow
    and Windy

  • Saturday

    Saturday: Snow likely, mainly before 10am.  Mostly cloudy, with a high near 14. Breezy.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 14 °F

    Snow Likely
    and Breezy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 8.

    Low: 8 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 29. Windy, with a southwest wind around 31 mph, with gusts as high as 44 mph.
Tonight
A 50 percent chance of snow, mainly after 1am. Mostly cloudy, with a temperature rising to around 22 by 5am. Wind chill values as low as zero. Breezy, with a south wind 18 to 22 mph, with gusts as high as 32 mph. New snow accumulation of around an inch possible.
Christmas Day
Snow likely, mainly between 7am and 1pm. Mostly cloudy, with a temperature falling to around 19 by 3pm. Wind chill values as low as -1. Windy, with a south wind 32 to 37 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow, mainly after 7pm. Low around 17. Wind chill values as low as -3. Windy, with a south wind around 30 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow. The snow could be heavy at times. High near 19. Windy, with a southwest wind 34 to 37 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow. The snow could be heavy at times. Low around 11. Windy. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow likely, mainly before 10am. Mostly cloudy, with a high near 14. Breezy. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 8.
Sunday
Partly sunny, with a high near 21.
Sunday Night
Partly cloudy, with a low around 13. Breezy.
Monday
Mostly sunny, with a high near 26. Breezy.
Monday Night
Partly cloudy, with a low around 19. Breezy.
Tuesday
Mostly sunny, with a high near 30.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Mount Bachelor OR
 44.11°N 121.77°W (Elev. 10190 ft)
1:07 pm PST Dec 24, 2025
1pm PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database