Average U.S. 30-year mortgage rate at 3.65 percent

WASHINGTON – Average long-term U.S. mortgage rates were unchanged this week, but remained at historically low levels amid worries about the global economy.

Mortgage buyer Freddie Mac says the average rate on a 30-year, fixed-rate mortgage remained at 3.65 percent this week. The average rate on 15-year fixed-rate mortgages was also unchanged from last week at 2.95 percent.

The average rate on five-year adjustable rate mortgages blipped up to 2.85 percent this week from 2.83 percent last week.

Interest rates are still low two months after the Federal Reserve raised the short-term rate it controls for the first time since 2006. Worries about the global economy have coaxed investors into seeking the security of U.S. Treasurys. Their purchases have pushed down yields on the government bonds, which mortgage rates track.