Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

48°F

9°C

Humidity 93%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 15 Apr 03:07 AM PDT
Extended Forecast for

Portola Valley CA

  • Overnight

    Overnight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 43. West northwest wind 5 to 8 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 66. North wind 5 to 10 mph, with gusts as high as 24 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46. Northwest wind 5 to 10 mph becoming light north. Winds could gust as high as 24 mph.

    Low: 46 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Calm wind.
Wednesday
Mostly sunny, with a high near 64. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 43. West northwest wind 5 to 8 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 66. North wind 5 to 10 mph, with gusts as high as 24 mph.
Thursday Night
Clear, with a low around 46. Northwest wind 5 to 10 mph becoming light north. Winds could gust as high as 24 mph.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
A slight chance of rain. Partly sunny, with a high near 70.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 49.
Monday
A chance of rain. Partly sunny, with a high near 66.
Monday Night
A chance of rain. Mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.37°N 122.22°W (Elev. 597 ft)
1:56 am PDT Apr 15, 2026
3am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
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Additional Resources

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