Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056° N Lon: 122.42694° W Elev: 150.0 ft.

60°F

16°C

Humidity	62%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Last update	24 Dec 04:43 PM PST

More Information:

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

Detailed forecast for

San Francisco County

Tonight

Breezy. A slight chance of thunderstorms in the evening. Showers. A chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 50s. South winds 20 to 30 mph. Gusts up to 50 mph increasing to 60 mph after midnight.

Christmas Day

Breezy. Showers and a slight chance of thunderstorms. Some thunderstorms may be severe with heavy rainfall. Highs in the upper 50s. South winds 20 to 30 mph with gusts to around 45 mph.

Thursday Night

Breezy. A slight chance of thunderstorms in the evening. Showers. Some thunderstorms may be severe with heavy rainfall. Lows in the lower 50s. South winds 20 to 30 mph. Gusts up to 55 mph in the evening.

Friday

Showers. Highs in the mid 50s. South winds 10 to 20 mph.

Friday Night

Showers likely and a slight chance of thunderstorms in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall in the evening. Lows in the upper 40s. Southwest winds 5 to 15 mph. Chance of precipitation 70 percent.

Saturday

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of showers. Highs in the lower to mid 50s.

Saturday Night

Mostly clear. Lows in the mid 40s.

Sunday

Mostly cloudy in the morning then becoming sunny. Highs in the lower 50s.

Sunday Night Through Tuesday

Mostly clear. Lows in the lower 40s. Highs in the mid 50s.

Tuesday Night

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s.

Wednesday

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of showers. Highs in the 50s.