Residential loan rates continued to rebound from recent record lows, rising for the 4th straight week in response to stronger data in the real estate markets. Freddie Mac announced that for the week ending August 23, 30-year fixed rates rose to 3.66% from 3.62%. The average for 15-year loans increased slightly to 2.89%. Adjustable rates were mixed with the average for one-year adjustables falling to 2.66% and five-year adjustables increasing to 2.80%. A year ago 30-year fixed rates were at 4.22%.