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 until December 25, 04:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

46°F

8°C

Humidity	74%
Wind Speed	WSW 7 MPH
Barometer	NA
Dewpoint	38°F (3°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	25 Dec 01:52 PM PST

More Information:

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

Extended Forecast for

17 Miles SSE Agness OR

Wind Advisory December 25, 02:05pm until December 25, 04:00pm

Click here for hazard details and duration

Wind Advisory

Wind Advisory December 25, 02:05pm until December 25, 04:00pm
NOW until 4:00pm Thu
Wind Advisory
Christmas Day
High: 42 °F
Showers
Likely and
Breezy
Tonight
Low: 37 °F
Showers and
Breezy
Friday
High: 40 °F
Showers then
Chance
Showers
Friday Night
Low: 35 °F
Rain/Snow
Saturday
High: 40 °F
Snow Likely
then Chance
Rain/Snow
Saturday Night
Low: 32 °F
Mostly Cloudy
Sunday
High: 45 °F
Partly Sunny
Sunday Night
Low: 33 °F
Partly Cloudy

Detailed Forecast

Christmas Day

A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Snow level 3900 feet. Mostly cloudy, with a high near 42. Breezy, with a south wind around 24 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers. Snow level 3800 feet. Low around 37. Breezy, with a south wind 14 to 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers, mainly before noon. Snow level 3700 feet. High near 40. South wind 13 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Rain, possibly mixed with snow, becoming all snow after 1am. Snow level 2900 feet. Low around 35. North northwest wind 6 to 8 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Saturday

Snow likely before 1pm, then a chance of rain. Snow level 2700 feet. Partly sunny, with a high near 40. North northeast wind 5 to 7 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Saturday Night

Mostly cloudy, with a low around 32.

Sunday

Partly sunny, with a high near 45.

Sunday Night

Partly cloudy, with a low around 33.

Monday

Mostly sunny, with a high near 50.

Monday Night

Partly cloudy, with a low around 37.

Tuesday

Sunny, with a high near 53.