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

Critical Fire Weather in the High Plains; Heat Continues in the West

Critical fire weather conditions will persist in the central High Plains through Friday as gusty winds and dry conditions continue. The heat wave across the West and Southwest will continue to intensify through the week, with daily and monthly record highs expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

LA HONDA (LAHC1)

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

NA

84°F

29°C

Humidity 40%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 57°F (14°C)
Visibility NA
Heat Index83°F (28°C)
Last update 18 Mar 05:07 PM PDT
Extended Forecast for

4 Miles S Portola Valley CA

Heat Advisory March 18, 05:20pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 05:20pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 71 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Northeast wind 3 to 6 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 72. North wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90. Light and variable wind becoming north northwest around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. West northwest wind 5 to 7 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 71. North northeast wind 3 to 6 mph.
Thursday
Sunny, with a high near 89. Northeast wind 3 to 6 mph.
Thursday Night
Clear, with a low around 72. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 90. Light and variable wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 68. West northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 50.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Portola Valley CA
 37.31°N 122.2°W (Elev. 1598 ft)
Last Update:
3:12 pm PDT Mar 18, 2026
Forecast Valid:
5pm PDT Mar 18, 2026-6pm PDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation