Mortgage and refinance interest rates today, Saturday, September 12, 2026: Mortgage rates up for the second straight day
Mortgage rates surged for the second consecutive day, according to the latest Zillow data. The 30-year fixed rate climbed by 8 basis points to 6.91%, while the 15-year fixed rate increased by 14 basis points to 6.37%. The 5/1 Adjustable Rate Mortgage (ARM) saw a 1 basis point rise to 6.85%. These national averages, rounded to the nearest hundredth, represent the current landscape for mortgage refinance rates on Saturday, September 12, 2026.
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