On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Dangerous heat continues across lower Miss. Valley, Deep South

High temperatures and dew points will persist Thursday into Friday across parts of the lower Miss. Valley & Deep South, creating dangerous heat index values in excess of 110 degrees for some locations. Heat Advisories & Excessive Heat Warnings are in effect across the region. Take extra precautions if you work or spend time outside & know the signs and symptoms of heat exhaustion and heat stroke.
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Current conditions at

LA HONDA (LAHC1)

Lat: 37.305233°NLon: 122.255253°WElev: 804ft.

NA

79°F

26°C

Humidity 53%
Wind Speed W 4 G 10 MPH
Barometer NA
Dewpoint 60°F (16°C)
Visibility NA
Heat Index80°F (27°C)
Last update 30 Jul 12:07 pm PDT
Extended Forecast for

4 Miles S Portola Valley CA

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 81. West wind 3 to 6 mph.

    Mostly Sunny

    High: 81 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm  in the evening.

    Mostly Cloudy

    Low: 61 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    T-storms

    High: 79 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Mostly cloudy, with a low around 59. West southwest wind 6 to 9 mph.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 59 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 75. West wind around 7 mph.

    Mostly Sunny

    High: 75 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 57.

    Mostly Clear

    Low: 57 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    Mostly Sunny

    High: 74 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 54.

    Partly Cloudy

    Low: 54 °F

  • Monday

    Monday: Mostly sunny, with a high near 73.

    Mostly Sunny

    High: 73 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. West wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 59. West southwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 75. West wind around 7 mph.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 74.
  Click Map For Forecast
Point Forecast:
4 Miles S Portola Valley CA
 37.31°N 122.2°W (Elev. 1598 ft)
3:08 am PDT Jul 30, 2015
1pm PDT Jul 30, 2015-6pm PDT Aug 5, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database