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

Wind Advisory in effect from December 25, 09:00 AM PST until December 25, 01:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

42°F

6°C

Humidity	95%
Wind Speed	SSE 2 MPH
Barometer	NA
Dewpoint	41°F (5°C)
Visibility	NA
Last update	25 Dec 08:52 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

11 Miles SE Agness OR

Wind Advisory until December 25, 01:00pm

Click here for hazard details and duration

Wind Advisory

Wind Advisory until December 25, 01:00pm
NOW until 1:00pm Thu
Wind Advisory
Christmas Day
High: 41 °F
Rain/Snow and
Breezy
Tonight
Low: 36 °F
Rain/Snow
Friday
High: 38 °F
Rain/Snow
Friday Night
Low: 34 °F
Snow
Saturday
High: 37 °F
Snow Likely
Saturday Night
Low: 30 °F
Mostly Cloudy
Sunday
High: 41 °F
Partly Sunny
Sunday Night
Low: 32 °F
Partly Cloudy

Detailed Forecast

Christmas Day

Rain, possibly mixed with snow showers. Snow level 3900 feet. High near 41. Breezy, with a south wind 17 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tonight

Rain and snow showers. Snow level 3800 feet. Low around 36. South wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Friday

Rain and snow before 7am, then snow between 7am and 10am, then rain and snow after 10am. Snow level 3700 feet. High near 38. South wind 15 to 21 mph becoming west southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Friday Night

Snow. Low around 34. Northwest wind 6 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Saturday

Snow likely, mainly before 10am. Partly sunny, with a high near 37. North northeast wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday Night

Mostly cloudy, with a low around 30.

Sunday

Partly sunny, with a high near 41.

Sunday Night

Partly cloudy, with a low around 32.

Monday

Mostly sunny, with a high near 47.

Monday Night

Partly cloudy, with a low around 35.

Tuesday

Sunny, with a high near 50.