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 >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

NA

54°F

12°C

Humidity 69%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 24 Dec 03:52 PM PST
Extended Forecast for

14 Miles S Murphy OR

Wind Advisory December 25, 09:00am until December 25, 01:00pm
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: A 50 percent chance of rain after 5pm. Snow level 5000 feet. Mostly sunny, with a steady temperature around 42. Light southeast wind.

    High: 42 °F

    Chance Rain

  • Tonight

    Tonight: Rain. Snow level 4700 feet rising to 5300 feet after midnight. Low around 37. Southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain

  • Christmas Day

    Christmas Day: Snow, possibly mixed with rain. Snow level 4100 feet. High near 40. South wind 10 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow. Snow level 3800 feet. Low around 35. South wind 8 to 11 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 35 °F

    Rain/Snow

  • Friday

    Friday: Rain and snow before 7am, then snow between 7am and 10am, then rain and snow after 10am. Snow level 3700 feet. High near 39. Southwest wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow

  • Friday Night

    Friday Night: Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Partly sunny, with a high near 37.

    High: 37 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of rain after 5pm. Snow level 5000 feet. Mostly sunny, with a steady temperature around 42. Light southeast wind.
Tonight
Rain. Snow level 4700 feet rising to 5300 feet after midnight. Low around 37. Southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Christmas Day
Snow, possibly mixed with rain. Snow level 4100 feet. High near 40. South wind 10 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Rain and snow. Snow level 3800 feet. Low around 35. South wind 8 to 11 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Rain and snow before 7am, then snow between 7am and 10am, then rain and snow after 10am. Snow level 3700 feet. High near 39. Southwest wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday Night
Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
A 20 percent chance of snow before 10am. Partly sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Sunny, with a high near 47.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Sunny, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles S Murphy OR
 42.15°N 123.34°W (Elev. 3570 ft)
Last Update:
4:26 pm PST Dec 24, 2025
Forecast Valid:
4pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation