Interest rates on the most common type of U.S. home loan fell for a sixth straight week to the lowest in almost four months on the back of a bond market rally that has driven down yields on the securities used to set mortgage costs, data out Thursday showed.

Mortgage finance giant Freddie Mac said the average rate on a 30-year fixed rate mortgage fell to 7.03 percent as of Thursday from 7.22 percent the week before. That is the lowest since mid-August.

Since hitting their highest levels in more than two decades in October near 8 percent, mortgage rates have tumbled as bond markets have rallied on expectations the Federal Reserve is done with its aggressive tightening campaign to rein in inflation.