Fear not, interest rate watchers, while mortgage interest rates were on the rise -- climbing up above 4% at the end of December, they have now tumbled back down to 3.79%.

When the Fed raised its key interest rates, it seemed that mortgage interest rates might finally be leaving the sub-4% range for good.

Not so much.

It's anyone's guess where mortgage interest rates will end up in December 2016 -- but their recent trajectory (down, down, down) no longer has me worrying (as much) that we will see a steady increase through the year up to and beyond 5%.