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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

Lat: 37.40583°NLon: 122.04806°WElev: 33.0ft.

Clear

75°F

24°C

Humidity 57%
Wind Speed NNW 9 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 15 Aug 12:55 PM PDT
Extended Forecast for

Cupertino CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. West northwest wind 8 to 13 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 62. West northwest wind 6 to 13 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 77. West northwest wind 6 to 13 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. North northwest wind 5 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76. Light west wind becoming west northwest 5 to 10 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °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 80.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. West northwest wind 8 to 13 mph.
Tonight
Increasing clouds, with a low around 62. West northwest wind 6 to 13 mph.
Saturday
Mostly sunny, with a high near 77. West northwest wind 6 to 13 mph.
Saturday Night
Partly cloudy, with a low around 59. North northwest wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 76. Light west wind becoming west northwest 5 to 10 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.04°W (Elev. 243 ft)
Last Update:
12:31 pm PDT Aug 15, 2025
Forecast Valid:
1pm PDT Aug 15, 2025-6pm PDT Aug 21, 2025
 
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