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 / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Mostly Cloudy

59°F

15°C

Humidity	77%
Wind Speed	SSE 12 MPH
Barometer	29.68 in (1005.08 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	24 Dec 09:47 PM PST

More Information:

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

Extended Forecast for

5 Miles SSW Mount Hamilton CA

Flood Watch December 25, 02:16am until December 26, 10:00pm

Wind Advisory December 25, 02:16am until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 25, 02:16am until December 26, 10:00pm
Wind Advisory December 25, 02:16am until December 25, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 50 °F
Severe
Thunderstorms
and Breezy
Christmas Day
High: 56 °F
Severe
Thunderstorms
Thursday Night
Low: 43 °F
Severe
Thunderstorms
then Rain
Friday
High: 54 °F
Rain
Friday Night
Low: 38 °F
Rain Likely
then Chance
Rain
Saturday
High: 54 °F
Slight Chance
Rain then
Mostly Sunny
Saturday Night
Low: 34 °F
Mostly Clear
then Patchy
Frost
Sunday
High: 56 °F
Areas Frost
then Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could be severe. Steady temperature around 50. Breezy, with a south wind around 24 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter 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 56. South wind 15 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Rain and possibly a thunderstorm. Some of the storms could be severe. Low around 43. South southwest wind 13 to 18 mph becoming east southeast in the evening. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday

Rain. High near 54. South wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. West southwest 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 rain before 10am. Mostly sunny, with a high near 54.

Saturday Night

Patchy frost after 1am. Otherwise, mostly clear, with a low around 34.

Sunday

Areas of frost before 8am. Otherwise, sunny, with a high near 56.

Sunday Night

Patchy frost after midnight. Otherwise, clear, with a low around 35.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 60.

Monday Night

Clear, with a low around 37.