The average US 30-year fixed mortgage rate fell to 6.65% as of Aug. 20, 2026, from 6.67% a week earlier, according to Freddie Mac. The rate remained above the 6.58% average recorded a year earlier. Freddie Mac Chief Economist Sam Khater said the decline offered modest relief for homebuyers and noted that comparing mortgage offers could save borrowers thousands. The average 15-year fixed mortgage rate also edged lower, to 5.95% from 5.96% the previous week.