Mortgage rates fell below three percent according to Freddie Mac. The average rate for a 30-year fixed rate mortgage dropped from 4.08 percent to 3.97 percent; the average rate for a 15-year fixed rate mortgage fell by nine basis point from 3.34 percent to 3.23 percent. The average rate for a 5/1 adjustable rate mortgage was eight basis points lower at 3.10 percent. Discount points averaged 0.50 percent for fixed rate mortgages and 0.40 percent for a 5/1 adjustable rate mortgage. Lower mortgage rates are good news for home buyers challenged by rapidly rising home prices based on high demand and low supplies of homes for sale.