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

TRIMMER (TRMC1)

Lat: 36.91105°NLon: 119.30659°WElev: 1487.0ft.

50°F

10°C

Humidity	99%
Wind Speed	SSE 3 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	25 Dec 09:52 AM PST

More Information:

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

Extended Forecast for

15 Miles NNW Squaw Valley CA

Flood Watch December 25, 10:09am until December 26, 04:00pm

Flood Advisory until December 25, 11:45am

Click here for hazard details and duration

Flood Watch

Flood Advisory

Flood Watch December 25, 10:09am until December 26, 04:00pm
Flood Advisory until December 25, 11:45am
NOW: Multiple hazards in effect
Click HERE for Details
Christmas Day
High: 49 °F
Showers
Tonight
Low: 49 °F
Showers
Friday
High: 49 °F⇓
Showers
Friday Night
Low: 36 °F
Chance Rain
Saturday
High: 43 °F
Slight Chance
Rain
Saturday Night
Low: 35 °F
Partly Cloudy
Sunday
High: 45 °F
Sunny
Sunday Night
Low: 36 °F
Mostly Clear

Detailed Forecast

Christmas Day

Showers and possibly a thunderstorm. High near 49. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and possibly a thunderstorm. Steady temperature around 49. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Showers and possibly a thunderstorm. Temperature falling to around 44 by 9am. East southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 36. East wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 20 percent chance of rain. Mostly sunny, with a high near 43. Calm wind becoming west around 5 mph in the afternoon.

Saturday Night

Partly cloudy, with a low around 35. Northeast wind around 5 mph.

Sunday

Sunny, with a high near 45. East northeast wind around 5 mph becoming calm.

Sunday Night

Mostly clear, with a low around 36. Northeast wind around 5 mph.

Monday

Sunny, with a high near 49. Northeast wind around 5 mph becoming calm.

Monday Night

Mostly clear, with a low around 40. East northeast wind around 5 mph.