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

Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

58°F

14°C

Humidity 84%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 14 Aug 11:10 PM PDT
Extended Forecast for

2 Miles WNW Cupertino CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. West wind around 5 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Light north northwest wind becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 23 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 60. West wind 13 to 21 mph, with gusts as high as 25 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 77. West northwest wind 14 to 16 mph, with gusts as high as 21 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. West wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 21 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Monday Night

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

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. West wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 83. Light north northwest wind becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
Increasing clouds, with a low around 60. West wind 13 to 21 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 77. West northwest wind 14 to 16 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 58. West wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 21 mph.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 86.
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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:
1:25 pm PDT Aug 14, 2025
Forecast Valid:
11pm PDT Aug 14, 2025-6pm PDT Aug 21, 2025
 
Forecast Discussion
 
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