Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

60°F

16°C

Humidity 47%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 09 Dec 10:07 PM PST
Extended Forecast for

4 Miles S Portola Valley CA

  • Tonight

    Tonight: Clear, with a low around 52. Northeast wind around 7 mph.

    Low: 52 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61. North wind around 7 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51. North northeast wind around 6 mph.

    Low: 51 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 63. North wind around 6 mph.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 50. Northeast wind around 6 mph.

    Low: 50 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 52. Northeast wind around 7 mph.
Wednesday
Sunny, with a high near 61. North wind around 7 mph.
Wednesday Night
Clear, with a low around 51. North northeast wind around 6 mph.
Thursday
Sunny, with a high near 63. North wind around 6 mph.
Thursday Night
Clear, with a low around 50. Northeast wind around 6 mph.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 49.
Monday
A slight chance of rain. Mostly sunny, with a high near 58.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Portola Valley CA
 37.33°N 122.21°W (Elev. 2231 ft)
12:26 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database