Hindu community & cultural center's Shiva Vishnu Temple located in Livermore, around 30 mins from San Francisco Bay Area is a very beautiful Temple. Its a Temple not just dedicated to one God, you can pray & get blessings from all the Hindu Gods.
More detailed info at the following website:
Its a very scenic drive (spring season) with green mountains of the Livermore valley on the way to this Temple.
Places to visit nearby:
* Del Valle Regional Park
* Golf Course & Vineyards