The average mortgage rate on a 30-year fixed mortgage is 6.74%, up from 6.61% last week.The average rate on a 15-year fixed mortgage is 5.79%, up 0.09 percentage points from the previous week.The current average interest rate on a 30-year fixed-rate jumbo mortgage is 7.14%, up from last week.Factors such as the overall economy, benchmark interest rates, and borrower-specific factors influence mortgage rates.