Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain Returns to California

Lake effect snow will continue through Friday bringing significant snowfall to areas east to southeast of the Great Lakes. Snow squalls may impact New Year's Eve travel this evening and overnight across parts of the Great Lakes, Ohio Valley, Mid-Atlantic, and Upstate New York. Heavy rain will bring another flash flooding threat for southern California New Year's Eve into New Year's Day. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory in effect from December 31, 05:00 AM PST until January 4, 02:00 PM PST

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Overcast

48°F

9°C

Humidity	87%
Wind Speed	E 3 MPH
Barometer	30.08 in (1018.63 mb)
Dewpoint	45°F (7°C)
Visibility	9.00 mi
Last update	31 Dec 05:20 AM PST

More Information:

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

Extended Forecast for

San Lorenzo CA

Coastal Flood Advisory until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Coastal Flood Advisory until January 4, 02:00pm
NOW until 2:00pm Sun
Coastal Flood Advisory
Overnight
Low: 46 °F
Chance Rain
Wednesday
High: 54 °F
Rain
Wednesday Night
Low: 50 °F
Rain
New Year's Day
High: 60 °F
Rain
Thursday Night
Low: 53 °F
Rain Likely
Friday
High: 61 °F
Rain
Friday Night
Low: 52 °F
Showers
Saturday
High: 59 °F
Rain

Detailed Forecast

Overnight

A 30 percent chance of rain. Cloudy, with a low around 46. East northeast wind around 6 mph.

Wednesday

Rain, mainly after 10am. High near 54. Northeast wind around 7 mph becoming southeast in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 50. East northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 60. South southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 53. South southeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain, mainly after 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain and possibly a thunderstorm after 4am. Low around 52. Chance of precipitation is 90%.

Saturday

Rain. Cloudy, with a high near 59.

Saturday Night

Rain. Mostly cloudy, with a low around 50.

Sunday

Rain likely. Mostly cloudy, with a high near 58.

Sunday Night

Rain likely. Mostly cloudy, with a low around 48.

Monday

Rain likely. Mostly cloudy, with a high near 57.

Monday Night

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