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

HIGH GLADE LOOKOUT (HGLC1)

Lat: 39.2089°NLon: 122.80999°WElev: 4807.0ft.

NA

32°F

0°C

Humidity 100%
Wind Speed SSE 33 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill17°F (-8°C)
Last update 26 Dec 02:36 AM PST
Extended Forecast for

10 Miles ESE Potter Valley CA

Flood Watch December 26, 03:04am until December 26, 10:00pm
Wind Advisory December 26, 03:04am until December 26, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 26, 03:04am until December 26, 10:00pm
    Wind Advisory December 26, 03:04am until December 26, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 35 °F

    Showers

  • Friday

    Friday: Showers.  High near 49. South southeast wind 11 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 49 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 10pm.  Cloudy during the early evening, then gradual clearing, with a low around 31. Northeast wind 8 to 10 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A 10 percent chance of showers before 10am.  Sunny, with a high near 51. North northeast wind around 5 mph becoming northwest in the afternoon.

    High: 51 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. North northeast wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 58. Northeast wind 3 to 5 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Overnight
Showers. Low around 35. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers. High near 49. South southeast wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
Showers likely, mainly before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 31. Northeast wind 8 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 10 percent chance of showers before 10am. Sunny, with a high near 51. North northeast wind around 5 mph becoming northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 31. North northeast wind 3 to 5 mph.
Sunday
Sunny, with a high near 58. Northeast wind 3 to 5 mph.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 62.
Monday Night
Clear, with a low around 36.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
New Year's Day
A chance of rain. Mostly cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles ESE Potter Valley CA
 39.25°N 122.95°W (Elev. 1555 ft)
1:10 am PST Dec 26, 2025
3am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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