Today's average mortgage rate on a 30-year fixed-rate mortgage is 6.71%, down 3.03% from the previous week.Borrowers may save on interest costs with a 15-year fixed mortgage, having an average APR of 5.80%.Current average interest rate on a 30-year fixed-rate jumbo mortgage is 7.18%.Mortgage rates are influenced by economic factors, Federal Reserve decisions, U.S. Treasury bond yields, and global events.