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

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056°NLon: 122.42694°WElev: 150.0ft.

55°F

13°C

Humidity	81%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	25 Dec 03:43 PM PST

More Information:

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

Extended Forecast for

4 Miles NE San Francisco CA

Flood Watch December 25, 04:37pm until December 26, 10:00pm

High Surf Advisory December 26, 04:00am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

High Surf Advisory

Flood Watch December 25, 04:37pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Christmas Day
High: 56 °F
Severe
Thunderstorms
and Breezy
Tonight
Low: 53 °F
Severe
Thunderstorms
and Windy
Friday
High: 55 °F
Showers
Likely
Friday Night
Low: 48 °F
Chance
Showers
Saturday
High: 52 °F
Slight Chance
Showers
Saturday Night
Low: 43 °F
Mostly Clear
Sunday
High: 51 °F
Mostly Sunny
Sunday Night
Low: 43 °F
Mostly Clear

Detailed Forecast

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 56. Breezy, with a south wind 26 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 53. Windy, with a south southwest wind 21 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 55. South wind 16 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. South southeast wind 9 to 11 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 20 percent chance of showers. Mostly sunny, with a high near 52. North wind around 7 mph.

Saturday Night

Mostly clear, with a low around 43.

Sunday

Mostly sunny, with a high near 51.

Sunday Night

Mostly clear, with a low around 43.

Monday

Sunny, with a high near 52.

Monday Night

Mostly clear, with a low around 43.