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

Hayward, Hayward Air Terminal (KHWD)

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

Mostly Cloudy

64°F

18°C

Humidity 55%
Wind Speed SSW 12 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 27 Mar 10:35 AM PDT
Extended Forecast for

Castro Valley CA

  • Today

    Today: A 30 percent chance of rain after 11am. Partly sunny, with a high near 63. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 63 °F

    Chance Rain

  • Tonight

    Tonight: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 50. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain before 11am. Partly sunny, with a high near 61. West wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 61 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44. West wind 5 to 14 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. West northwest wind 3 to 7 mph.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 46. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain

  • Sunday

    Sunday: Rain. High near 61. Chance of precipitation is 90%.

    High: 61 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 61.

    High: 61 °F

    Rain Likely

Detailed Forecast

Today
A 30 percent chance of rain after 11am. Partly sunny, with a high near 63. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 50. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 61. West wind 5 to 14 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 44. West wind 5 to 14 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny, with a high near 62. West northwest wind 3 to 7 mph.
Saturday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 46. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain. High near 61. Chance of precipitation is 90%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 49.
Monday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 61.
Monday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47.
Tuesday
A chance of rain. Mostly cloudy, with a high near 61.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A chance of rain. Mostly cloudy, with a high near 61.
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.69°N 122.05°W (Elev. 364 ft)
Last Update:
2:09 am PDT Mar 27, 2025
Forecast Valid:
10am PDT Mar 27, 2025-6pm PDT Apr 2, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation