Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

66°F

19°C

Humidity 43%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 18 Apr 10:07 AM PDT
Extended Forecast for

4 Miles S Portola Valley CA

  • Today

    Today: Mostly sunny, with a high near 65. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. South wind 3 to 5 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 62. Southwest wind 3 to 8 mph.

    High: 62 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. South wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers.  Partly sunny, with a high near 59. South wind 13 to 15 mph, with gusts as high as 28 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers.  Low around 52. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers.  Partly sunny, with a high near 54.

    High: 54 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 65. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 52. South wind 3 to 5 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 62. Southwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 48. South wind 8 to 11 mph, with gusts as high as 18 mph.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 59. South wind 13 to 15 mph, with gusts as high as 28 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers. Low around 52. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 55. Chance of precipitation is 90%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49.
Wednesday
A chance of showers. Partly sunny, with a high near 54.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 47.
Friday
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)
8:31 am PDT Apr 18, 2026
10am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
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