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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

LA HONDA (LAHC1)

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

NA

59°F

15°C

Humidity 67%
Wind Speed ENE 4 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 17 Mar 06:07 AM PDT
Extended Forecast for

2 Miles WSW Portola Valley CA

Heat Advisory March 17, 06:52am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 06:52am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. North wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Light and variable wind becoming north northwest around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64. North northwest wind around 6 mph becoming calm in the evening.

    Low: 64 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 85. Calm wind becoming north northeast around 6 mph in the afternoon.
Tonight
Clear, with a low around 63. North wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 85. Light and variable wind becoming north northwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 64. North northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Portola Valley CA
 37.37°N 122.25°W (Elev. 1473 ft)
Last Update:
1:54 am PDT Mar 17, 2026
Forecast Valid:
6am PDT Mar 17, 2026-6pm PDT Mar 23, 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