National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

Palo Alto Airport (KPAO)

Lat: 37.46667°NLon: 122.11667°WElev: 7.0ft.

Mostly Cloudy

57°F

14°C

Humidity 76%
Wind Speed NA 4 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 24 Dec 06:47 AM PST
Extended Forecast for

East Palo Alto CA

Flood Watch December 24, 07:22am until December 26, 10:00pm
Wind Advisory December 24, 08:00pm until December 25, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 24, 07:22am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Today

    High: 61 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 51. East southeast wind 13 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 51 °F

    Severe
    Thunderstorms

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. Some of the storms could be severe. High near 58. Breezy, with a south wind 17 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 48. Breezy, with a south wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Severe
    Thunderstorms
    and Breezy

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 56. South wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers

  • Friday Night

    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 1am. Otherwise, mostly cloudy, with a low around 43. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 55.

    High: 55 °F

    Chance
    Showers and
    Areas Fog

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 38.

    Low: 38 °F

    Patchy Fog

Detailed Forecast

Today
A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. Mostly cloudy, with a high near 61. Light and variable wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 51. East southeast wind 13 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. High near 58. Breezy, with a south wind 17 to 24 mph, with gusts as high as 43 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. Breezy, with a south wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 33 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. South wind around 15 mph, with gusts as high as 21 mph. 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 1am. Otherwise, mostly cloudy, with a low around 43. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers, mainly before 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 55.
Saturday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 38.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 38.
Monday
Patchy fog. Otherwise, sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
East Palo Alto CA
 37.45°N 122.13°W (Elev. 49 ft)
Last Update:
4:29 am PST Dec 24, 2025
Forecast Valid:
7am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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Chance of Precipitation