Unsettled Weather in the West; Marine and Coastal Impacts Along the East Coast

A series of Pacific fronts will bring periodic waves of showers and thunderstorms to parts of the Great Basin and Pacific Northwest the next few days. Swells, high surf, dangerous rip currents and areas of coastal flooding continue along much of the East Coast from both Humberto and Imelda. Unseasonably hot temperatures continue for much of the Plains and Midwest through the remainder of the week. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Overcast

74°F

23°C

Humidity 51%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 01 Oct 02:54 PM PDT
Extended Forecast for

Castro Valley CA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain.  Mostly cloudy, with a steady temperature around 71. West wind around 7 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance Rain

  • Tonight

    Tonight: A 50 percent chance of rain.  Mostly cloudy, with a low around 62. West southwest wind around 6 mph becoming light and variable  after midnight.  New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 62 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 72. Light west northwest wind becoming west 5 to 10 mph in the morning.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. West wind 5 to 9 mph becoming light west southwest  after midnight.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Light west southwest wind becoming west 5 to 9 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

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

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 71. West wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 50 percent chance of rain. Mostly cloudy, with a low around 62. West southwest wind around 6 mph becoming light and variable after midnight. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Partly sunny, with a high near 72. Light west northwest wind becoming west 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 57. West wind 5 to 9 mph becoming light west southwest after midnight.
Friday
Mostly sunny, with a high near 72. Light west southwest wind becoming west 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.69°N 122.07°W (Elev. 197 ft)
2:28 pm PDT Oct 1, 2025
3pm PDT Oct 1, 2025-6pm PDT Oct 8, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database