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

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

80°F

27°C

Humidity 42%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Heat Index80°F (27°C)
Last update 21 Mar 02:10 PM PDT
Extended Forecast for

5 Miles SSW Los Altos Hills CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 72. Northwest wind around 10 mph, with gusts as high as 23 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. Northeast wind 5 to 8 mph becoming west northwest in the afternoon.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. West northwest wind around 7 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70. West northwest wind around 7 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 72. Northwest wind around 10 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 54. Northwest wind 6 to 10 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 71. Northeast wind 5 to 8 mph becoming west northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 53. West northwest wind around 7 mph.
Monday
Sunny, with a high near 70. West northwest wind around 7 mph.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Los Altos Hills CA
 37.31°N 122.18°W (Elev. 2119 ft)
Last Update:
2:07 pm PDT Mar 21, 2026
Forecast Valid:
2pm PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation