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

LOS ALTOS (LOAC1)

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

NA

81°F

27°C

Humidity 40%
Wind Speed ENE 2 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Heat Index81°F (27°C)
Last update 17 Mar 11:10 AM PDT
Extended Forecast for

5 Miles SSW Los Altos Hills CA

Heat Advisory March 17, 11:57am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 11:57am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Northeast wind 3 to 5 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 71. North wind 3 to 5 mph.

    Low: 71 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Light and variable wind becoming north northwest around 5 mph in the afternoon.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 89. Northeast wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 71. Northeast wind 3 to 5 mph.
Wednesday
Sunny, with a high near 89. Light and variable wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 71. North wind 3 to 5 mph.
Thursday
Sunny, with a high near 90. Light and variable wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 72.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Los Altos Hills CA
 37.29°N 122.17°W (Elev. 1699 ft)
1:54 am PDT Mar 17, 2026
11am PDT Mar 17, 2026-6pm PDT Mar 23, 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