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

Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. 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 56%
Wind Speed WNW 19 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 12 Sep 02:20 PM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 73. West wind around 13 mph, with gusts as high as 21 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Southwest wind 6 to 13 mph becoming west northwest in the morning. Winds could gust as high as 18 mph.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 56. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 81. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 73. West wind around 13 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 57. West southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 73. Southwest wind 6 to 13 mph becoming west northwest in the morning. Winds could gust as high as 18 mph.
Sunday Night
Increasing clouds, with a low around 56. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Monday
Mostly sunny, with a high near 81. Calm wind becoming west 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 80.
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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:
1:26 pm PDT Sep 12, 2026
Forecast Valid:
2pm PDT Sep 12, 2026-6pm PDT Sep 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation