Average U.S. rates on fixed mortgages rose this week in the wake of comments by Federal Reserve Chair Janet Yellen suggesting that the Fed could start raising short-term interest rates by mid-2015.

Average U.S. rates on fixed mortgages rose this week in the wake of comments by Federal Reserve Chair Janet Yellen suggesting that the Fed could start raising short-term interest rates by mid-2015.

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

Current avg.Last week52-week high52-week low30-year fixed4.404.324.583.3515-year fixed3.423.323.602.565-year adjustable3.103.023.282.561-year adjustable2.442.492.712.44All values in percentage pointsSource: Freddie Mac Primary Mortgage Market Survey