Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

AE6EO MOUNTAIN VIEW (AW020)

Lat: 37.4015°NLon: 122.10517°WElev: 65.0ft.

60°F

16°C

Humidity	89%
Wind Speed	SE 5 MPH
Barometer	29.54 in (1000.34 mb)
Dewpoint	57°F (14°C)
Visibility	NA
Last update	24 Dec 12:55 AM PST

More Information:

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

Extended Forecast for

Los Altos CA

Flood Watch December 24, 01:08am until December 26, 10:00pm

Wind Advisory until December 24, 04:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 01:08am until December 26, 10:00pm
Wind Advisory until December 24, 04:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 53 °F
Showers and
Breezy
Wednesday
High: 61 °F
Chance
Showers then
Severe
Thunderstorms
Wednesday Night
Low: 51 °F
Severe
Thunderstorms
Christmas Day
High: 57 °F
Severe
Thunderstorms
then Showers
Thursday Night
Low: 48 °F
Severe
Thunderstorms
Friday
High: 56 °F
Showers
Friday Night
Low: 43 °F
Showers
Likely and
Patchy Fog
Saturday
High: 55 °F
Chance
Showers and
Patchy Fog

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Low around 53. Breezy, with a south wind 16 to 23 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could be severe. Mostly cloudy, with a high near 61. East wind 6 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and possibly a thunderstorm before midnight, then showers likely between midnight and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 51. South southeast wind 9 to 18 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 57. South wind 17 to 21 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 48. South wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Showers, with thunderstorms also possible after 1pm. High near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 43. Chance of precipitation is 60%.

Saturday

A chance of showers, mainly before 10am. Patchy fog before 11am. Otherwise, mostly sunny, with a high near 55.

Saturday Night

Mostly clear, with a low around 38.

Sunday

Sunny, with a high near 56.

Sunday Night

Mostly clear, with a low around 38.

Monday

Sunny, with a high near 58.

Monday Night

Mostly clear, with a low around 40.