Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

57°F

14°C

Humidity 89%
Wind Speed NW 6 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 13 Jul 11:54 PM PDT
Extended Forecast for

Castro Valley CA

  • Overnight

    Overnight: A slight chance of drizzle.  Mostly cloudy, with a low around 56. West wind 3 to 5 mph.

    Low: 56 °F

    Slight Chance
    Drizzle

  • Monday

    Monday: A slight chance of drizzle before 11am.  Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light west wind increasing to 5 to 10 mph in the morning.

    High: 79 °F

    Slight Chance
    Drizzle then
    Sunny

  • Monday Night

    Monday Night: A slight chance of drizzle after 2am.  Increasing clouds, with a low around 56. West wind 5 to 8 mph.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Drizzle

  • Tuesday

    Tuesday: A slight chance of drizzle before 11am.  Cloudy through mid morning, then gradual clearing, with a high near 76. West southwest wind 5 to 10 mph.

    High: 76 °F

    Slight Chance
    Drizzle then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of drizzle. Mostly cloudy, with a low around 56. West wind 3 to 5 mph.
Monday
A slight chance of drizzle before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light west wind increasing to 5 to 10 mph in the morning.
Monday Night
A slight chance of drizzle after 2am. Increasing clouds, with a low around 56. West wind 5 to 8 mph.
Tuesday
A slight chance of drizzle before 11am. Cloudy through mid morning, then gradual clearing, with a high near 76. West southwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 57. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.71°N 122.08°W (Elev. 397 ft)
11:59 pm PDT Jul 13, 2025
12am PDT Jul 14, 2025-6pm PDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database