Average U.S. long-term mortgage rates rose sharply amid growing expectations that the Federal Reserve may soon raise its key short-term interest rate.

Average U.S. long-term mortgage rates rose sharply amid growing expectations that the Federal Reserve may soon raise its key short-term interest rate.

Here's a look at rates for fixed- and adjustable-rate mortgages this week and over the past year:

Current avg. Last week 52-week high 52-week low30-year fixed 3.87 percent 3.76 percent 4.01 percent 3.59 percent15-year fixed 3.09 percent 2.98 percent 3.20 percent 2.92 percent5-year adjustable 2.96 percent 2.89 percent 3.02 percent 2.82 percent1-year adjustable 2.62 percent 2.54 percent 2.63 percent 2.37 percent