By Tess Stynes 
 

Average fixed mortgage rates in the U.S. edged down in the latest week as recent data gave a mixed view on the housing market, according to mortgage-finance company Freddie Mac (FMCC).

Freddie Mac Chief Economist Frank Nothaft noted in a statement Thursday that recent reports showed existing home sales dropped 1.8% in August but sales of new single-family homes climbed 18% for the month. He added the Federal Housing Finance Agency reported house prices rose just 0.1% on a seasonally-adjusted basis in July and rose 4.4% over the past year.

For the week ended Thursday, the 30-year fixed-rate mortgage averaged 4.2%, compared with 4.23% a week earlier and 4.32% a year earlier. Rates on 15-year fixed-rate mortgages averaged 3.36%, compared with 3.37% the previous week and a year earlier.

Five-year Treasury-indexed hybrid adjustable-rate mortgages, or ARMs, on average, were at 3.08%, compared with 3.06% the previous week and 3.07% a year earlier. One-year Treasury-indexed ARM rates on average were 2.43%, unchanged from the previous week and down from 2.63% a year earlier.

Write to Tess Stynes at tess.stynes@wsj.com