National Weather Service Forecast for: Castro Valley, CAIssued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: Fri, 07-Nov-2025 12:44am PST | ||||||||||||||||||||||||||||||||||||||||
| Castro Valley/Hayward | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Mostly cloudy, with a low around 56. Southwest wind around 2 mph. |
| Friday |
Patchy fog before 10am. Mostly sunny. High near 71, with temperatures falling to around 66 in the afternoon. Southwest wind 1 to 6 mph. |
| Friday Night |
Partly cloudy, with a low around 54. South southwest wind around 2 mph. |
| Saturday |
Mostly sunny, with a high near 75. Northeast wind 1 to 5 mph. |
| Saturday Night |
Mostly clear, with a low around 54. North northeast wind 1 to 5 mph. |
| Sunday |
Mostly sunny, with a high near 80. |
| Sunday Night |
Partly cloudy, with a low around 57. |
| Monday |
Partly sunny, with a high near 79. |
| Monday Night |
Mostly cloudy, with a low around 58. |
| Veterans Day |
Partly sunny, with a high near 77. |
| Tuesday Night |
Mostly cloudy, with a low around 56. |
| Wednesday |
A chance of rain after 10am. Mostly cloudy, with a high near 71. |
| Wednesday Night |
Rain. Mostly cloudy, with a low around 57. |
| Thursday |
Rain. Mostly cloudy, with a high near 67. |
Forecast from NOAA-NWS for Castro Valley, CA.
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