Current rates in San Antonio, Texas are 2.89% for a 30 year fixed loan, 2.43% for 15 year fixed loan and 2.93% for a 5/1 ARM. San Antonio, TX Mortgage Rates Today. Monday, November 2, 2020. Loan Type.Mortgages san-antonio team includes home loan professionals allover Texas. We’re devoted to supplying our customers with the finest superior service to suit your mortgage requirements.