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, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

haze

59°F

15°C

Humidity	77%
Wind Speed	E 6 MPH
Barometer	29.62 in (1003.05 mb)
Dewpoint	52°F (11°C)
Visibility	6.00 mi
Last update	24 Dec 02:20 PM PST

More Information:

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

Extended Forecast for

San Francisco International Airport CA

Flood Watch December 24, 02:50pm until December 26, 10:00pm

Wind Advisory December 24, 08:00pm until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 02:50pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
This Afternoon
High: 60 °F
Severe
Thunderstorms
and Breezy
Tonight
Low: 54 °F
Windy. Severe
Thunderstorms
then Showers
Christmas Day
High: 58 °F
Severe
Thunderstorms
and Windy
Thursday Night
Low: 52 °F
Severe
Thunderstorms
and Windy
then Showers
and Breezy
Friday
High: 57 °F
Showers
Friday Night
Low: 48 °F
Showers
Likely
Saturday
High: 55 °F
Chance
Showers
Saturday Night
Low: 43 °F
Mostly Clear

Detailed Forecast

This Afternoon

A chance of showers, with thunderstorms also possible after 4pm. Some of the storms could be severe. Mostly cloudy, with a high near 60. Breezy, with a south wind 18 to 22 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 54. Windy, with a south southeast wind 29 to 33 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 58. Windy, with a south wind 24 to 29 mph increasing to 32 to 37 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 52. Windy, with a south southwest wind 24 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 57. South wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 30 percent chance of showers, mainly before 10am. Mostly sunny, with a high near 55.

Saturday Night

Mostly clear, with a low around 43.

Sunday

Mostly sunny, with a high near 54.

Sunday Night

Mostly clear, with a low around 42.

Monday

Sunny, with a high near 56.

Monday Night

Mostly clear, with a low around 43.