Today's average interest rate on a 30-year purchase mortgage is 6.715%, essentially unchanged from 6.716% yesterday, according to Zillow data provided to U.S. News. For refinancing mortgages, today's 30-year rate is 6.801%, and the current 15-year rate is 5.796%. Rates drifted upward after the June Federal Reserve meeting – not because the central bank held rates steady, as widely expected, but because of the hawkish tone for future monetary policy in the updated summary of economic projections.