Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory until January 4, 02:00 PM PST

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Rain

52°F

11°C

Humidity	93%
Wind Speed	E 6 MPH
Barometer	29.85 in (1010.84 mb)
Dewpoint	50°F (10°C)
Visibility	7.00 mi
Last update	01 Jan 03:20 AM PST

More Information:

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

Extended Forecast for

San Mateo CA

Coastal Flood Advisory January 1, 03:44am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Coastal Flood Advisory January 1, 03:44am until January 4, 02:00pm
NOW until 2:00pm Sun
Coastal Flood Advisory
Overnight
Low: 53 °F
Rain
New Year's Day
High: 62 °F
Showers
Thursday Night
Low: 51 °F
Showers
Likely then
Chance
Showers
Friday
High: 61 °F
Chance
Showers
Friday Night
Low: 55 °F
Showers
Saturday
High: 62 °F
Showers
Saturday Night
Low: 53 °F
Showers
Sunday
High: 60 °F
Showers

Detailed Forecast

Overnight

Rain. Steady temperature around 53. East wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

New Year's Day

Showers, with thunderstorms also possible after 10am. High near 62. South wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers likely, mainly before 10pm. Mostly cloudy, with a low around 51. South southeast wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

A 50 percent chance of showers, mainly after 10am. Mostly cloudy, with a high near 61. Southeast wind 8 to 17 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Showers. Low around 55. South wind 16 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Saturday

Showers. High near 62. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night

Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Low around 53. Chance of precipitation is 90%.

Sunday

Showers, with thunderstorms also possible after 10am. Cloudy, with a high near 60.

Sunday Night

Showers. Cloudy, with a low around 50.

Monday

Showers. Mostly cloudy, with a high near 58.

Monday Night

Showers likely. Mostly cloudy, with a low around 46.

Tuesday

A chance of showers. Partly sunny, with a high near 57.

Tuesday Night

A slight chance of showers. Mostly cloudy, with a low around 45.