From what I have heard from speaking with a lot of clinical faculty, you have to have over a 3.5 to even be considered for a Ph.D. program. While it is unfortunate, because most Ph.D. programs receive so many applications, they immediately throw out any with GPAs under a 3.5. Even a 3.5 is low for applying to clinical Ph.D. programs. You will definitely need to go for a masters first and get close to a 4.0 Masters GPA for the Ph.D. programs to let your undergraduate GPA slide.