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

Severe Thunderstorms in the Northeast and Northern Plains; Critical Fire Weather in the West

Scattered severe thunderstorms capable of damaging wind gusts and hail are forecast across the Northeast U.S. and North Dakota today. Heavy to excessive rainfall is possible over eastern New Mexico into western Texas and over the western Florida peninsula today. Critical fire weather conditions will persist today over parts of the interior Northwest and Great Basin. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Partly Cloudy

61°F

16°C

Humidity 77%
Wind Speed W 9 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 03 Jul 09:35 AM PDT
Extended Forecast for

Castro Valley CA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 72. West southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. Southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Independence Day

    Independence Day: Mostly cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 68 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. West southwest wind 8 to 13 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Southwest wind 7 to 11 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 72. West southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 52. Southwest wind around 11 mph, with gusts as high as 20 mph.
Independence Day
Mostly cloudy through mid morning, then gradual clearing, with a high near 68. West southwest wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
Increasing clouds, with a low around 52. West southwest wind 8 to 13 mph.
Saturday
Mostly sunny, with a high near 72. Southwest wind 7 to 11 mph.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
Last Update:
2:32 am PDT Jul 3, 2025
Forecast Valid:
9am PDT Jul 3, 2025-6pm PDT Jul 9, 2025
 
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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