Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. 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.

49°F

9°C

Humidity	74%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	41°F (5°C)
Visibility	NA
Last update	30 Dec 12:43 PM PST

More Information:

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

Extended Forecast for

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

This Afternoon
High: 54 °F
Mostly Cloudy
Tonight
Low: 48 °F
Slight Chance
Rain
Wednesday
High: 55 °F
Rain
Wednesday Night
Low: 50 °F
Rain
New Year's Day
High: 60 °F
Rain
Thursday Night
Low: 55 °F
Rain
Friday
High: 60 °F
Rain and
Breezy
Friday Night
Low: 51 °F
Rain
Saturday
High: 58 °F
Rain

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 54. North northeast wind around 10 mph.

Tonight

A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 48. North northeast wind 6 to 8 mph.

Wednesday

Rain, mainly after 10am. High near 55. East wind around 7 mph becoming north in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 50. East wind around 7 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. North northeast wind 6 to 8 mph becoming south in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain. Low around 55. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. High near 60. Breezy. Chance of precipitation is 90%.

Friday Night

Rain. Cloudy, with a low around 51.

Saturday

Rain. Mostly cloudy, with a high near 58.

Saturday Night

Rain likely. Mostly cloudy, with a low around 49.

Sunday

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