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

Flood Watch until December 26, 10:00 PM PST

Current conditions at

ARROYO SECO (ASRC1)

Lat: 36.23548°NLon: 121.47988°WElev: 879.0ft.

54°F

12°C

Humidity	84%
Wind Speed	SW 3 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	25 Dec 10:04 AM PST

More Information:

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

Extended Forecast for

4 Miles SW Arroyo Seco CA

Flood Watch December 25, 10:59am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 25, 10:59am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Christmas Day
High: 51 °F
Breezy. Rain
then Severe
Thunderstorms
Tonight
Low: 40 °F
Severe
Thunderstorms
then Rain
Friday
High: 49 °F
Rain
Friday Night
Low: 38 °F
Rain Likely
then Chance
Rain
Saturday
High: 52 °F
Chance Rain
Saturday Night
Low: 36 °F
Mostly Clear
then Patchy
Frost
Sunday
High: 56 °F
Sunny
Sunday Night
Low: 40 °F
Clear

Detailed Forecast

Christmas Day

Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain after 4pm. Some of the storms could be severe. High near 51. Breezy, with a south southwest wind 20 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Some of the storms could be severe. Low around 40. Southwest wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday

Rain. High near 49. South southwest wind 7 to 9 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. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 30 percent chance of rain. Mostly sunny, with a high near 52. North northwest wind 5 to 7 mph.

Saturday Night

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

Sunday

Sunny, with a high near 56.

Sunday Night

Clear, with a low around 40.

Monday

Sunny, with a high near 62.

Monday Night

Mostly clear, with a low around 44.