The average rate on a 30-year U.S. mortgage edged higher for the second week in a row, though it remains near its low point so far this year.

The average long-term mortgage rate ticked up from last week's 6.22% to 6.24%, the Federal Home Loan Mortgage Corporation mortgage buyer, Freddie Mac, said Thursday. A year ago, the rate averaged 6.78%.

Just two weeks ago, the average rate was at 6.17%, its lowest level in more than a year.

Borrowing costs on 15-year fixed-rate mortgages, popular with homeowners refinancing their home loans, edged lower this week. The rate averaged 5.49%, down from 5.5% last week. A year ago, it was 5.99%, Freddie Mac said.

Mortgage rates are influenced by several factors, from the Federal Reserve's interest rate policy decisions to bond market investors' expecta

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