Record Warmth Lingers; Fire Weather Concerns; Unsettled Pacific Northwest

More record warm temperatures are forecast this week from California, Southwest, Plains then into the Mississippi Valley and Southeast. The warmth combining with dry conditions may result in elevated to locally critical fire weather conditions. Meanwhile, another Pacific system will move across the Pacific Northwest with lower elevation rain and mountain snows. For Hawaii, conditions improving. 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 76%
Wind Speed W 5 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 Mar 08:35 PM PDT
Extended Forecast for

Castro Valley CA

  • Tonight

    Tonight: Partly cloudy, with a low around 51. South southwest wind around 7 mph.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 76. South wind 5 to 9 mph becoming west in the afternoon.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 52. West southwest wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 52 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 51. West wind 5 to 9 mph.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. South southwest wind around 7 mph.
Monday
Sunny, with a high near 76. South wind 5 to 9 mph becoming west in the afternoon.
Monday Night
Clear, with a low around 52. West southwest wind 5 to 8 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.
Tuesday Night
Clear, with a low around 51. West wind 5 to 9 mph.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
8:32 pm PDT Mar 22, 2026
8pm PDT Mar 22, 2026-6pm PDT Mar 29, 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