National Weather Service Forecast for: Castro Valley, CAIssued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: Fri, 14-Mar-2025 5:14am PDT | ||||||||||||||||||||||||||||||||||||||||
| Castro Valley/Hayward | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Rain. Cloudy. Low around 42, with temperatures rising to around 44 overnight. South southeast wind around 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Friday |
Rain before 11am, then showers and thunderstorms between 11am and 2pm, then rain. Mostly cloudy. High near 58, with temperatures falling to around 55 in the afternoon. South southwest wind 16 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
A chance of rain before 11pm. Partly cloudy. Low around 44, with temperatures rising to around 46 overnight. West southwest wind 6 to 17 mph, with gusts as high as 28 mph. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
A slight chance of rain between 11am and 5pm. Partly sunny, with a high near 61. South southwest wind 5 to 8 mph. Chance of precipitation is 20%. |
| Saturday Night |
Partly cloudy, with a low around 46. South southwest wind around 8 mph. |
| Sunday |
Rain likely after 11am. Partly sunny, with a high near 65. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. |
| Sunday Night |
Rain. Mostly cloudy, with a low around 50. Chance of precipitation is 90%. |
| Monday |
Rain. Mostly cloudy, with a high near 59. |
| Monday Night |
A chance of rain before 11pm. Mostly clear, with a low around 43. |
| Tuesday |
Sunny, with a high near 61. |
| Tuesday Night |
Mostly clear, with a low around 42. |
| Wednesday |
A chance of rain after 5pm. Partly sunny, with a high near 64. |
| Wednesday Night |
A chance of rain. Mostly cloudy, with a low around 47. |
| Thursday |
A chance of rain. Partly sunny, with a high near 63. |
Forecast from NOAA-NWS for Castro Valley, CA.
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