Forensic nurse salary in USA. The average forensic nurse’s salary in the US is around $57,990 to $79,696 per year, according to PayScale reports. But Salary.com reported that Clinical Nurse Specialists-Forensics earn a median salary of $87,801 per year.Entry-level positions pay around $73,399 per year, which is in the lowest 10% of the earners.xperience helps determine the salary of forensic nurse or that of a nurse specialist. Those with five to nine years of experience under their belt make C$58,900 to C$87,500, while specialists who have at least ten years of experience earn C$83,378 to C$91,097 per annum.