Castro Valley, CA

Current conditions, hourly and 7-day forecast, and live radar for Castro Valley, CA 94552. Right now: partly cloudy, 68°F. Data from the National Weather Service.

• Tonight: Partly cloudy, with a low around 68. Southwest wind around 3 mph.
• Thursday: Mostly sunny. High near 86, with temperatures falling to around 82 in the afternoon. Southwest wind 2 to 9 mph.
• Thursday Night: Mostly cloudy, with a low around 59. Southwest wind around 7 mph.
• Friday: Mostly sunny, with a high near 77. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.
• Friday Night: Mostly clear, with a low around 57. West southwest wind 7 to 12 mph, with gusts as high as 21 mph.
• Saturday: Mostly sunny, with a high near 71.