Average rate on a 30-year mortgage in the US slips to 6.81%

US 30-year mortgage rates dipped slightly to 6.81% this week, down from 6.84% last week. 15-year fixed rates increased to 6.1% from 6.02%. The 10-year Treasury bond yield, influencing mortgage rates, fell to 4.23%. High mortgage rates and home prices continue to challenge potential buyers. US home sales are projected to hit a 28-year low.