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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

82°F

28°C

Humidity 46%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 59°F (15°C)
Visibility NA
Heat Index82°F (28°C)
Last update 22 Aug 01:10 PM PDT
Extended Forecast for

2 Miles WNW Cupertino CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. North wind around 7 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy through mid morning, then becoming sunny, with a high near 84. Calm wind becoming north around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. North wind around 7 mph.
Tonight
Partly cloudy, with a low around 57. Light and variable wind.
Sunday
Mostly cloudy through mid morning, then becoming sunny, with a high near 84. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 58. Light and variable wind.
Monday
Mostly sunny, with a high near 82. Calm wind becoming west northwest around 6 mph in the afternoon.
Monday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 56.
Tuesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Cupertino CA
 37.32°N 122.09°W (Elev. 955 ft)
Last Update:
1:26 pm PDT Aug 22, 2026
Forecast Valid:
1pm PDT Aug 22, 2026-6pm PDT Aug 28, 2026
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation