Ongoing uncertainty could cause rates to stay high, or increase further. For instance, if tariffs cause inflation to reignite, which most experts and Fed officials expect, it could result in higher bond yields and fewer interest rate cuts by the central bank. Both would be bad for mortgage rates.

The average rate on 30-year fixed home loans increased to 6.75% for the week ending July 17, up from 6.72% last week.

The average rate on a 30-year U.S. mortgage rose for the second week in a row, another setback for the U.S. housing market, which is mired in a sales slump as affordability constraints shut out prospective homebuyers.