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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

LA HONDA (LAHC1)

Lat: 37.30523°NLon: 122.25525°WElev: 804.0ft.

NA

55°F

13°C

Humidity 99%
Wind Speed ESE 2 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 01 Jan 04:07 PM PST
Extended Forecast for

5 Miles WNW Portola Valley CA

Wind Advisory January 2, 01:00pm until January 3, 01:00pm
Click here for hazard details and duration
Wind Advisory

  • New Year's Day

    New Year's Day: A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 54. South wind around 17 mph, with gusts as high as 29 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly before 11pm. Mostly cloudy, with a steady temperature around 51. South wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: A slight chance of rain before 3pm, then rain after 4pm. High near 56. South wind 17 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Slight Chance
    Rain then
    Rain

  • Friday Night

    Friday Night: Rain. Low around 52. Breezy, with a south southeast wind 24 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Rain and
    Breezy

  • Saturday

    Saturday: Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 58. Breezy, with a south wind around 24 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 51. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Showers

  • Sunday

    Sunday: Rain. High near 55. Chance of precipitation is 100%.

    High: 55 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

  • Monday

    Monday: Rain. Mostly cloudy, with a high near 55.

    High: 55 °F

    Rain

Detailed Forecast

New Year's Day
A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 54. South wind around 17 mph, with gusts as high as 29 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 11pm. Mostly cloudy, with a steady temperature around 51. South wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A slight chance of rain before 3pm, then rain after 4pm. High near 56. South wind 17 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 52. Breezy, with a south southeast wind 24 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 58. Breezy, with a south wind around 24 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 51. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 55. Chance of precipitation is 100%.
Sunday Night
Rain. Mostly cloudy, with a low around 48.
Monday
Rain. Mostly cloudy, with a high near 55.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Mostly sunny, with a high near 56.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Partly sunny, with a high near 55.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Thursday
A chance of rain. Partly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Portola Valley CA
 37.4°N 122.31°W (Elev. 2198 ft)
Last Update:
12:32 pm PST Jan 1, 2026
Forecast Valid:
4pm PST Jan 1, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation