Many students in the 3.0-3.7 range will either attend their local Cal state or community college and transfer to a CSU or UC. There are also several private universities in California which will accept good students such as Whittier College, La Verne University, University of Redlands, Concordia University etc…
Some of my son’s friends have gone OOS to Northern Arizona, Arizona State, University of Nevada, Reno and Las Vegas. If you check out this discussion thread, you will see plenty of options for these students: Parents of the HS Class of 2022- 3.0-3.4