The current average mortgage rate on a 30-year fixed mortgage is 6.59%, compared to 6.76% a week earlier.The average rate on a 15-year fixed mortgage is 5.64%, down 0.20 percentage point from the previous week.Today's average rate on a 30-year, fixed-rate mortgage is 6.59%, which is 0.17 percentage point lower than last week.On a 30-year jumbo mortgage, the average interest rate decreased to 7%.