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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

87°F

31°C

Humidity 41%
Wind Speed ENE 3 MPH
Barometer NA
Dewpoint 61°F (16°C)
Visibility NA
Heat Index87°F (31°C)
Last update 01 Aug 01:10 PM PDT
Extended Forecast for

Cupertino CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. North wind 6 to 8 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. North wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming west around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 90. North wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 59. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 92. Calm wind becoming north 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.07°W (Elev. 305 ft)
Last Update:
11:26 am PDT Aug 1, 2026
Forecast Valid:
1pm PDT Aug 1, 2026-6pm PDT Aug 7, 2026
 
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Additional Resources

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