Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

LA HONDA (LAHC1)

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

NA

86°F

30°C

Humidity 14%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Heat Index83°F (28°C)
Last update 19 Mar 11:07 AM PDT
Extended Forecast for

4 Miles S Portola Valley CA

Heat Advisory March 19, 11:39am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 11:39am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 71. East northeast wind 5 to 7 mph.

    Low: 71 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 84. East northeast wind around 6 mph becoming northwest in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. West wind around 7 mph.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 73. West northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 85. North wind around 6 mph.
Tonight
Clear, with a low around 71. East northeast wind 5 to 7 mph.
Friday
Sunny, with a high near 84. East northeast wind around 6 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 66. West wind around 7 mph.
Saturday
Partly sunny, with a high near 73. West northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 62.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Portola Valley CA
 37.33°N 122.21°W (Elev. 2231 ft)
5:12 am PDT Mar 19, 2026
11am PDT Mar 19, 2026-6pm PDT Mar 25, 2026
 
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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