Average long-term U.S. mortgage rates surged this week, marking their largest one-week gain this year.

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

Current avg.Last week52-week high52-week low
30-year fixed4.234.124.534.10
15-year fixed3.373.263.563.20
5-year adjustable3.062.993.152.93
1-year adjustable2.432.452.642.35
All values in percentage points
Source: Freddie Mac Primary Mortgage Market Survey