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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

LA HONDA (LAHC1)

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

NA

59°F

15°C

Humidity 68%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 21 Mar 02:07 AM PDT
Extended Forecast for

Portola Valley CA

  • Overnight

    Overnight: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Calm wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. West wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. West northwest wind around 6 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. Calm wind.
Saturday
Mostly sunny, with a high near 78. Calm wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 48. West wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 48. West northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.37°N 122.22°W (Elev. 597 ft)
Last Update:
2:07 am PDT Mar 21, 2026
Forecast Valid:
2am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation