National Weather Service Forecast for: Castro Valley, CAIssued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: Thu, 27-Nov-2025 1:52am PST | ||||||||||||||||||||||||||||||||||||||||
| Castro Valley/Hayward | ||||||||||||||||||||||||||||||||||||||||
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| Thanksgiving Day |
Mostly sunny. High near 68, with temperatures falling to around 58 in the afternoon. Northeast wind 2 to 6 mph. |
| Tonight |
Partly cloudy, with a low around 46. East southeast wind 1 to 5 mph. |
| Friday |
Mostly sunny. High near 64, with temperatures falling to around 59 in the afternoon. South southwest wind 1 to 6 mph. |
| Friday Night |
Patchy fog after 9pm. Partly cloudy, with a low around 45. East wind 1 to 5 mph. |
| Saturday |
Patchy fog before 9am. Mostly sunny, with a high near 64. Northeast wind around 6 mph. |
| Saturday Night |
Patchy fog after 5am. Partly cloudy, with a low around 46. |
| Sunday |
Areas of fog before 9am. Mostly sunny, with a high near 62. |
| Sunday Night |
Partly cloudy, with a low around 44. |
| Monday |
Sunny, with a high near 64. |
| Monday Night |
Mostly clear, with a low around 45. |
| Tuesday |
Mostly sunny, with a high near 63. |
| Tuesday Night |
Partly cloudy, with a low around 46. |
| Wednesday |
Mostly sunny, with a high near 62. |
| Wednesday Night |
Mostly clear, with a low around 45. |
Forecast from NOAA-NWS for Castro Valley, CA.
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