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

San Francisco, San Francisco International Airport (KSFO)

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

Clear

48°F

9°C

Humidity	70%
Wind Speed	S 3 MPH
Barometer	30.23 in (1023.71 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	29 Dec 10:35 PM PST

More Information:

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

Extended Forecast for

3 Miles SSE Hillsborough CA

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

Click here for hazard details and duration

Coastal Flood Advisory

Tonight
Low: 40 °F
Mostly Clear
Tuesday
High: 58 °F
Partly Sunny
Tuesday Night
Low: 47 °F
Chance Rain
Wednesday
High: 56 °F
Rain Likely
Wednesday Night
Low: 49 °F
Rain
New Year's Day
High: 59 °F
Rain
Thursday Night
Low: 53 °F
Rain
Friday
High: 60 °F
Rain
Friday Night
Low: 48 °F
Rain

Detailed Forecast

Tonight

Mostly clear, with a low around 40. North northeast wind around 6 mph becoming east southeast after midnight.

Tuesday

Partly sunny, with a high near 58. East southeast wind 6 to 9 mph becoming northeast in the afternoon.

Tuesday Night

A 30 percent chance of rain, mainly after 4am. Cloudy, with a low around 47. Northeast wind around 7 mph.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 56. East wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 49. East southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 59. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain. Low around 53. Chance of precipitation is 80%.

Friday

Rain. Cloudy, with a high near 60.

Friday Night

Rain. Cloudy, with a low around 48.

Saturday

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

Saturday Night

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