The U.S. weekly average for the 30-year fixed mortgage rate rose above 4 percent for the first time since last summer to 4.04 percent in this week’s survey. This is the highest weekly average for the 30-year fixed rate mortgage since May of 2017. Inflation is firming, the Federal Reserve’s Beige Book indicates broad-based economic growth and labor markets are tightening. This means upward pressure on long-term rates, like the 30-year fixed-rate mortgage, is building.

After dipping slightly last week, Treasury yields surged this week amidst sell-offs in the bond market. The 10-year Treasury yield, for instance, reached its highest point since March of last year. Mortgage rates followed Treasury yields and ticked up modestly across the board. The 30-year fixed-rate mortgage averaged 3.99 percent, up 4 basis points from a week ago.

Treasury yields fell from a week ago, helping to drive mortgage rates down to start the year. The 30-year fixed-rate mortgage fell 4 basis points from a week ago to 3.95 percent in the year’s first survey. Despite increases in short-term interest rates, long-term interest rates remain subdued. The 30-year mortgage rate is down a quarter of a percentage point from where it was a year ago and the spread between the 30-year fixed and 5/1 adjustable rate mortgage is the lowest since 2009.

As expected, mortgage rates felt the effect of last week’s surge in long-term interest rates in the final, shortened week of 2017. The 30-year fixed mortgage rate increased 5 basis points to 3.99 percent in this week’s survey. Although this week’s survey rate represents a five-month high, 30-year fixed mortgage rates are still below the levels we saw at the end of last year and early part of 2017. Mortgage rates have remained relatively low all year.