After months of setting or flirting with record lows, "the latest economic indicators point toward low inflation but gradually stronger economic activity which placed further upward pressure on long-term Treasury yields and, in turn, fixed mortgage rates," said Freddie Mac Chief Economist and Vice President Freddie Nothaft.
For the week, the average 30-year fixed mortgage, which has been below 4 percent for every week but one in 2012, rose from 3.59 percent to 3.62 percent with an average 0.6 points, Freddie Mac said.
A year earlier, interest rates for 30-year, fixed-rate loans were at 4.15 percent.
For 15-year loans in the week ending Thursday, interest rates rose from 2.84 percent to 2.88 percent with an average 0.6 points. A year ago, 15-year loan rates averaged 3.36 percent.
Interest rates for five-year adjustable-rate mortgages fell slightly from 2.77 percent to 2.76 percent in the week with 0.6 points. In the same week of 2011, rates for five-year ARM contracts stood at 3.08 percent.
The average interest rates for one-year ARM contracts rose from 2.65 percent to 2.69 percent in the week with 0.4 points. Rates a year ago for one-year ARM contracts averaged 2.86 percent.