Mortgage refinance rates remained unchanged at 6.83%.Rates averaged 5.71% for a 15-year financed mortgage and 6.56% for a 20-year financed mortgage.The average rate for a 30-year fixed-rate mortgage refinance is 6.83%, up 0.11 point from last week.Refinancing your mortgage can be worth it for multiple reasons, including lower interest rates, monthly payments, and more repayment flexibility.