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 DOWNTOWN (SFOC1)

Lat: 37.77056°NLon: 122.42694°WElev: 150.0ft.

48°F

9°C

Humidity	72%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	30 Dec 12:43 AM PST

More Information:

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

Extended Forecast for

3 Miles WNW San Francisco CA

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

Click here for hazard details and duration

Coastal Flood Advisory

Overnight
Low: 46 °F
Mostly Clear
Tuesday
High: 54 °F
Mostly Cloudy
Tuesday Night
Low: 48 °F
Mostly Cloudy
then Chance
Rain
Wednesday
High: 54 °F
Rain Likely
Wednesday Night
Low: 49 °F
Rain
New Year's Day
High: 57 °F
Rain
Thursday Night
Low: 55 °F
Rain
Friday
High: 58 °F
Rain
Friday Night
Low: 50 °F
Rain

Detailed Forecast

Overnight

Mostly clear, with a steady temperature around 46. North northeast wind around 10 mph.

Tuesday

Mostly cloudy, with a high near 54. North northeast wind 10 to 14 mph, with gusts as high as 18 mph.

Tuesday Night

A 30 percent chance of rain after 4am. Cloudy, with a low around 48. Northeast wind around 11 mph.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 54. East northeast wind around 10 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 wind around 10 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 57. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain. Low around 55. Chance of precipitation is 90%.

Friday

Rain. Cloudy, with a high near 58.

Friday Night

Rain. Cloudy, with a low around 50.

Saturday

Rain likely. Mostly cloudy, with a high near 55.

Saturday Night

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