Heat Continues Across the Central and Western U.S.; Tracking Hazardous Weather Across the Northern U.S.

Early-season record warmth will persist across portions of the western and central U.S. through mid week, with high temperatures approaching 90 degrees from Texas to the Ohio Valley. Rain and mountain snow are possible across the Pacific Northwest Wednesday, with Severe Thunderstorms and wintry weather expected across the Northeast Thursday and Friday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

70°F

21°C

Humidity 37%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 24 Mar 10:35 AM PDT
Extended Forecast for

Castro Valley CA

  • Today

    Today: Sunny, with a high near 81. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. South southwest wind 5 to 7 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. West wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. West wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76. West southwest wind 5 to 8 mph becoming north in the morning.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Friday Night

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

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Calm wind becoming west 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 51. South southwest wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 74. West wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 47. West wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 76. West southwest wind 5 to 8 mph becoming north in the morning.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 53.
Monday
A slight chance of rain. Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
8:46 am PDT Mar 24, 2026
10am PDT Mar 24, 2026-6pm PDT Mar 30, 2026
 
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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