Mortgage rates were moderately lower today, keeping them well-within the dominant range of the past 2-3 weeks.  Compared to yesterday, lenders would be just slightly more likely to quote 3.375% on top tier conventional 30yr fixed scenarios compared to 3.5%, but both rates have equally prevalent in general.  

Today's improvement came courtesy of a policy announcement from the Bank of England (BOE).  Naturally, the BOE is not in charge of mortgage rates in the US.  Even the Federal Reserve can't quite make that claim.  But...  The actions of the world's biggest central banks are the most important factors when it comes to general momentum in interest rates around the world.  Simply put, the BOE said it will be buying more bonds than expected.  More bond buying results in lower rates--all other things being equal.

The actions of the Federal Reserve are much more important to domestic interest rates, including mortgages.  The Fed (and the rest of the world, for that matter) will get an important piece of economic data tomorrow morning in the form of the Employment Situation (aka the "jobs report," NFP, or "nonfarm payrolls").  If it's super strong, expectations could increase for a Fed rate hike at the September meeting.  Increasing rate hike expectations typically push mortgage rates higher.  Things could go the other way if the jobs data is weaker.  It's also possible that the data comes out like a warm bowl of porridge and we see very little movement, but it's good to remember that volatile reactions--for better or worse--are more likely following the big jobs report.