To add on to what Sachin said, you can sign up for an account at that Glassdoor website and change the search parameters to use a specific job title, see salaries at a specific organization/office/hospital, and narrow down by city.
Thanks for the question. The average salary for a Registered Nurse is $129,241 in San Jose, CA. Salaries estimates are based on 354 salaries submitted anonymously to Glassdoor by Registered Nurse employees in San Jose, CA.
Hope this helps!