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

Palo Alto Airport (KPAO)

Lat: 37.46667°NLon: 122.11667°WElev: 7.0ft.

Rain

57°F

14°C

Humidity	82%
Wind Speed	SSE 20 MPH
Barometer	29.62 in (1003.05 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	24 Dec 07:47 PM PST

More Information:

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

Extended Forecast for

2 Miles NNW Newark CA

Flood Watch December 24, 08:23pm until December 26, 10:00pm

Wind Advisory until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 08:23pm until December 26, 10:00pm
Wind Advisory until December 25, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 55 °F
Showers and
Breezy
Christmas Day
High: 57 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 49 °F
Severe
Thunderstorms
and Breezy
then Showers
Likely
Friday
High: 56 °F
Showers
Friday Night
Low: 43 °F
Showers
Likely then
Chance
Showers
Saturday
High: 54 °F
Slight Chance
Showers then
Mostly Sunny
Saturday Night
Low: 37 °F
Mostly Clear
Sunday
High: 53 °F
Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Steady temperature around 55. Breezy, with a south southeast wind 21 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Christmas Day

Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 57. Breezy, with a south wind 16 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 49. Breezy, with a south wind 16 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 56. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Showers likely, mainly before 10pm. Mostly cloudy, with a low around 43. South southeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 20 percent chance of showers before 10am. Partly sunny, with a high near 54.

Saturday Night

Mostly clear, with a low around 37.

Sunday

Sunny, with a high near 53.

Sunday Night

Areas of frost after 3am. Otherwise, mostly clear, with a low around 36.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 55.

Monday Night

Mostly clear, with a low around 38.