Winter Storm to Impact the Northern Mid-Atlantic and Interior Northeast; heavy rain in the Southeast

A storm system will bring a variety of hazards to the Eastern US. Wintry precipitation is expected from the central Appalachians to the Northeast. Heavy snow is expected for interior New England and the northern Mid-Atlantic through the night, and icing will continue in the Appalachians this morning. On the south side of the system, heavy rain and thunderstorms will persist across the Southeast. Read More >

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

53°F

12°C

Humidity 79%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 02 Dec 09:10 AM PST
Extended Forecast for

2 Miles NNW Portola Valley CA

Coastal Flood Advisory December 2, 09:56am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 2, 09:56am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Calm wind becoming west northwest around 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. East wind 5 to 10 mph becoming north in the morning.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Calm wind becoming north around 5 mph in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

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

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 64. Calm wind becoming north around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 42. Calm wind becoming west northwest around 6 mph.
Wednesday
Mostly sunny, with a high near 62. East wind 5 to 10 mph becoming north in the morning.
Wednesday Night
Partly cloudy, with a low around 41. Light and variable wind.
Thursday
Mostly sunny, with a high near 64. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Portola Valley CA
 37.42°N 122.23°W (Elev. 397 ft)
8:29 am PST Dec 2, 2025
9am PST Dec 2, 2025-6pm PST Dec 8, 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