Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

59°F

15°C

Humidity 63%
Wind Speed E 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 21 Jan 03:07 PM PST
Extended Forecast for

Portola Valley CA

  • This Afternoon

    This Afternoon: Scattered sprinkles between 4pm and 5pm.  Cloudy, with a high near 62. Calm wind.

    High: 62 °F

    Scattered
    Sprinkles

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62. Light and variable wind.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after midnight.  Otherwise, partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Scattered sprinkles between 4pm and 5pm. Cloudy, with a high near 62. Calm wind.
Tonight
Mostly cloudy, with a low around 46. Calm wind.
Thursday
Partly sunny, with a high near 62. Light and variable wind.
Thursday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 44. Calm wind.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 58. Calm wind.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 61.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.37°N 122.22°W (Elev. 597 ft)
2:22 pm PST Jan 21, 2026
3pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database