U.S. mortgage rates fell after a weaker-than-expected jobs report drove investors to the safety of the government bonds that guide borrowing costs.

The average rate for a 30-year fixed mortgage was 4.41 percent this week, down from 4.51 percent and the lowest since November, according to a statement Thursday from Freddie Mac. The average 15-year rate dropped to 3.45 percent from 3.56 percent, the McLean, Va.-based mortgage-finance company said.