National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

51°F

11°C

Humidity 68%
Wind Speed ESE 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 20 Apr 05:07 AM PDT
Extended Forecast for

Portola Valley CA

  • Overnight

    Overnight: A 20 percent chance of rain. Mostly clear, with a low around 48. South wind around 7 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Slight Chance
    Rain

  • Monday

    Monday: Rain, mainly after 2pm. High near 65. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Chance Rain
    then Rain

  • Monday Night

    Monday Night: Rain. Low around 50. Southwest wind 5 to 9 mph becoming light south southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Rain

  • Tuesday

    Tuesday: Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 62. Light south wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm. Mostly cloudy, with a low around 48. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of rain before 11am. Mostly sunny, with a high near 64. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

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

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly clear, with a low around 48. South wind around 7 mph, with gusts as high as 22 mph.
Monday
Rain, mainly after 2pm. High near 65. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. Low around 50. Southwest wind 5 to 9 mph becoming light south southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 62. Light south wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm. Mostly cloudy, with a low around 48. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 64. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Partly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.37°N 122.22°W (Elev. 597 ft)
Last Update:
2:11 am PDT Apr 20, 2026
Forecast Valid:
5am PDT Apr 20, 2026-6pm PDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation