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 Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

light rain,mist

54°F

12°C

Humidity	87%
Wind Speed	SSE 14 MPH
Barometer	29.67 in (1004.74 mb)
Dewpoint	50°F (10°C)
Visibility	6.00 mi
Last update	25 Dec 04:00 AM PST

More Information:

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

Extended Forecast for

3 Miles SE San Jose International Airport CA

Flood Watch December 25, 04:30am until December 26, 10:00pm

Wind Advisory December 25, 04:30am until December 25, 10:00am

Flash Flood Warning until December 25, 06:15am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flash Flood Warning

Flood Watch December 25, 04:30am until December 26, 10:00pm
Wind Advisory December 25, 04:30am until December 25, 10:00am
Flash Flood Warning until December 25, 06:15am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 51 °F
Severe
Thunderstorms
Christmas Day
High: 58 °F
Severe
Thunderstorms
Thursday Night
Low: 47 °F
Severe
Thunderstorms
and Breezy
then Rain
Likely
Friday
High: 56 °F
Rain
Friday Night
Low: 42 °F
Chance Rain
then Slight
Chance Rain
Saturday
High: 54 °F
Slight Chance
Rain then
Mostly Sunny
Saturday Night
Low: 36 °F
Mostly Clear
then Patchy
Frost
Sunday
High: 55 °F
Patchy Frost
then Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 51. South wind 18 to 20 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Christmas Day

Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain after 4pm. Some of the storms could be severe. High near 58. East southeast wind 16 to 20 mph becoming west southwest in the morning. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 47. Breezy, with an east southeast wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Rain, mainly before 4pm. High near 56. South southeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42. South wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

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

Saturday Night

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

Sunday

Patchy frost before 7am. Otherwise, sunny, with a high near 55.

Sunday Night

Patchy frost after 1am. Otherwise, clear, with a low around 36.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 58.

Monday Night

Mostly clear, with a low around 37.