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

MIDDLE PEAK (MDEC1)

Lat: 37.92778°NLon: 122.58722°WElev: 2339.0ft.

48°F

9°C

Humidity	100%
Wind Speed	SE 22 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Wind Chill	41°F (5°C)
Last update	24 Dec 09:36 PM PST

More Information:

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

Extended Forecast for

4 Miles W Mill Valley CA

Flood Watch December 24, 09:49pm 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, 09:49pm until December 26, 10:00pm
Wind Advisory until December 25, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 53 °F
Showers and
Windy
Christmas Day
High: 53 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 51 °F
Severe
Thunderstorms
and Windy
then Showers
and Breezy
Friday
High: 52 °F
Showers
Friday Night
Low: 46 °F
Showers
Likely
Saturday
High: 51 °F
Slight Chance
Showers
Saturday Night
Low: 42 °F
Mostly Clear
Sunday
High: 49 °F
Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Steady temperature around 53. Windy, with a south wind 30 to 34 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Christmas Day

Showers, with thunderstorms also possible after 7am. Some of the storms could be severe. High near 53. Breezy, with a south wind 23 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could be severe. Steady temperature around 51. Windy, with a south southwest wind 23 to 31 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

Friday

Showers. High near 52. South wind 11 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 46. South southwest wind 7 to 9 mph becoming west northwest after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 20 percent chance of showers. Mostly sunny, with a high near 51.

Saturday Night

Mostly clear, with a low around 42.

Sunday

Sunny, with a high near 49.

Sunday Night

Mostly clear, with a low around 41.

Monday

Sunny, with a high near 51.

Monday Night

Mostly clear, with a low around 42.