Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

67°F

19°C

Humidity 68%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 29 Sep 02:07 PM PDT
Extended Forecast for

4 Miles S Portola Valley CA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 66. South southwest wind around 6 mph.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of rain.  Mostly cloudy, with a steady temperature around 61. Light south wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain before 11am.  Partly sunny, with a high near 66. Calm wind becoming south southwest around 6 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm.  Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain.  Mostly cloudy, with a high near 66. South wind 3 to 5 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 59. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 66. South southwest wind around 6 mph.
Tonight
A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 61. Light south wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 66. Calm wind becoming south southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 58. Calm wind.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 66. South wind 3 to 5 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 59. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 70.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Portola Valley CA
 37.31°N 122.2°W (Elev. 1598 ft)
1:26 pm PDT Sep 29, 2025
2pm PDT Sep 29, 2025-6pm PDT Oct 5, 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