Depends what part of PA you are in. In the eastern side of the state near Philly, new grads can start around $25/hr. However on the western side of the state near Pittsburgh, new grads start around $20/hr. Some parts of the state, especially urban areas that are swamped with nursing programs, are more difficult for new grads to get a job right away. Apply early, apply to a variety of jobs, and if you are dead set on a hospital position, don't be above moving out of state if necessary.
Friends of mine who recently were hired at two different major teaching hospitals in Philly (Einstein and HUP) are making $27 and some change as new grad RNs. I work across the bridge in Camden and started at $31/hr.