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.

58°F

14°C

Humidity	64%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Last update	25 Dec 01:43 PM PST

More Information:

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

Extended Forecast for

4 Miles W San Francisco CA

Flood Watch December 25, 02:05pm until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 25, 02:05pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Christmas Day
High: 57 °F
Severe
Thunderstorms
and Breezy
Tonight
Low: 51 °F
Breezy.
Severe
Thunderstorms
then Chance
Showers
Friday
High: 56 °F
Showers
Friday Night
Low: 48 °F
Showers
Likely then
Chance
Showers
Saturday
High: 53 °F
Slight Chance
Showers
Saturday Night
Low: 43 °F
Partly Cloudy
Sunday
High: 52 °F
Mostly Sunny
Sunday Night
Low: 42 °F
Mostly Clear

Detailed Forecast

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 57. Breezy, with a south wind around 23 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 7pm, then showers likely. Some of the storms could be severe. Low around 51. Breezy, with a south southwest wind 21 to 26 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, with thunderstorms also possible after 4pm. High near 56. South wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers and thunderstorms likely before 9pm, then showers likely and possibly a thunderstorm between 9pm and 10pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 48. West southwest wind around 10 mph becoming north northwest after midnight. Chance of precipitation is 60%. 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 53. North wind around 10 mph.

Saturday Night

Partly cloudy, with a low around 43.

Sunday

Mostly sunny, with a high near 52.

Sunday Night

Mostly clear, with a low around 42.

Monday

Sunny, with a high near 53.

Monday Night

Mostly clear, with a low around 42.