Last updated: September 20, 2026. This article is educational and is not individualized mortgage, lending, or investment advice.
Quick take: Freddie Mac’s weekly survey put the average 30-year fixed-rate mortgage at 6.95% on September 17, 2026, up from 6.76% a week earlier and 6.71% two weeks earlier. The data show a higher national average—not the exact rate any particular borrower will receive.
The September mortgage-rate data
| Week ending | 30-year fixed | 15-year fixed |
|---|---|---|
| September 3, 2026 | 6.71% | 6.04% |
| September 10, 2026 | 6.76% | 6.09% |
| September 17, 2026 | 6.95% | 6.26% |
Across the two-week span, the 30-year average increased 24 basis points and the 15-year average increased 22 basis points. One basis point is one-hundredth of a percentage point. These figures come from the Freddie Mac Primary Mortgage Market Survey.
What the survey measures—and what it does not
Freddie Mac’s reading is a national weekly survey average. A real quote depends on a borrower’s credit profile, debt-to-income ratio, loan-to-value ratio, property location, loan program, lock period, points, and lender. That is why a headline rate can be useful market context but cannot replace written loan estimates from competing lenders.
When comparing offers, use the same assumptions: loan amount, down payment, property type, rate-lock period, and points or lender credits. Then compare the interest rate, APR, cash needed at closing, and monthly principal-and-interest payment separately. Taxes, insurance, and association dues are not included in the national average.
Why Treasury yields are useful context, not a one-to-one rule
Fixed mortgage pricing is tied to longer-term market rates and mortgage-backed-security spreads. It does not move point-for-point with the federal funds target. The Treasury’s official curve showed a 10-year yield of 5.01% on September 18, compared with 4.96% on September 11. The dates do not match the mortgage survey exactly, so this is market backdrop rather than proof that one move caused the other.
For that broader context, read our guide to the 10-year Treasury yield near 5%. Our Fed-rate guide also explains why an overnight policy decision and a 30-year fixed mortgage can move differently.
What borrowers can do this week
- Ask for comparable written quotes: two loan estimates with different points are not directly comparable until closing costs are aligned.
- Check the lock terms: a quoted rate may expire or change with the lock period.
- Separate affordability from prediction: a payment that fits the budget matters more than guessing next week’s survey average.
- Review refinance math carefully: compare total closing costs and the break-even period, not only a lower advertised rate.
FAQ
Did mortgage rates rise by 0.24 percentage point in two weeks?
Freddie Mac’s published 30-year survey average rose from 6.71% on September 3 to 6.95% on September 17. Individual loan quotes can move by a different amount.
Does a Fed rate hike automatically raise fixed mortgage rates?
No. Fixed mortgage rates respond to longer-term rates, mortgage-market spreads, and lender pricing as well as expectations about policy.
Is 6.95% available to every borrower?
No. It is a survey average. Your offered rate can be higher or lower depending on the loan and borrower details.