Mortgage and refinance interest rates today, Wednesday, August 19, 2026: Surprisingly calm amid bond market volatility

The 30-year fixed mortgage rate stepped slightly higher, while both the 15-year and 5/1 ARM rates eased lower today, according to the Zillow lender marketplace. Rates have been surprisingly calm so far this week, considering recent bond market volatility. The average 30-year fixed rate is 6.55% today, Wednesday, August 19, 2026, up two basis points

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