Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. 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.

Clear

40°F

4°C

Humidity	79%
Wind Speed	ENE 4 MPH
Barometer	30.18 in (1022.01 mb)
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Wind Chill	37°F (3°C)
Last update	30 Dec 03:54 AM PST

More Information:

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

Extended Forecast for

Castro Valley CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Today
High: 57 °F
Partly Sunny
Tonight
Low: 46 °F
Mostly Cloudy
then Slight
Chance Rain
Wednesday
High: 54 °F
Rain Likely
Wednesday Night
Low: 49 °F
Rain and
Areas Fog
New Year's Day
High: 60 °F
Rain and
Areas Fog
Thursday Night
Low: 54 °F
Rain and
Areas Fog
Friday
High: 60 °F
Rain
Friday Night
Low: 49 °F
Rain
Saturday
High: 57 °F
Rain Likely

Detailed Forecast

Today

Partly sunny, with a high near 57. East northeast wind 8 to 11 mph.

Tonight

A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 46. East northeast wind 9 to 11 mph.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 54. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Areas of fog after 1am. Low around 49. East wind 6 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Areas of fog. High near 60. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain. Areas of fog. Low around 54. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain. High near 60. Chance of precipitation is 80%.

Friday Night

Rain. Mostly cloudy, with a low around 49.

Saturday

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

Saturday Night

Rain likely, mainly before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 45.

Sunday

A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 57.