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

Air Quality Concerns; Fire Weather; Extreme Heat; Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin. Heavy rainfall and flash flooding possible for the Southeast through Monday. For Hawaii, gusty trade winds a drier weather could result in any fires that start to spread rapidly. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

66°F

19°C

Humidity 63%
Wind Speed W 5 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 03 Aug 03:30 PM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 74. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 74 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. Southwest wind 6 to 10 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 5 to 8 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. West wind 5 to 9 mph becoming light south southwest after midnight.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 74. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 55. Southwest wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 56. West wind 5 to 9 mph becoming light south southwest after midnight.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.07°W (Elev. 197 ft)
Last Update:
1:42 pm PDT Aug 3, 2025
Forecast Valid:
3pm PDT Aug 3, 2025-6pm PDT Aug 10, 2025
 
Forecast Discussion
 
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Additional Resources

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