Two things happened last week, and only one of them is in this week's rate number.
The 30-year fixed averaged 6.66%, up a hundredth of a point from 6.65%. The 15-year averaged 5.98%, up three hundredths. That ends a two-week drift lower with a move so small it barely qualifies as one. But the survey carries a data date of August 27, and the event that actually reset expectations came the next morning, when Fed Chair Kevin Warsh delivered his first Jackson Hole keynote. This week's number closed before he spoke.
| Rate | Latest | Prior Week | Change |
|---|---|---|---|
| 30-year fixed | 6.66% | 6.65% | ▲ +0.01 |
| 15-year fixed | 5.98% | 5.95% | ▲ +0.03 |
| 30-year minus 15-year | 0.68 | 0.70 | ▼ narrower |
| Fed funds rate (effective, July) | 3.63% | 3.63% | — unchanged |
Quick read: Treat 6.66% as a backward-looking figure. Wednesday's inflation report landed close to expectations and markets shrugged; Friday's keynote did the work, moving futures odds of a September rate increase from roughly a third to roughly a coin flip in one session. Freddie Mac's survey is a weekly snapshot with a data date, not a live quote, so that repricing shows up in the print dated September 3. The FOMC meets September 15–16.
The Bureau of Economic Analysis released the July PCE price index on August 26. Headline inflation held at 3.7% from a year earlier, a tenth above the 3.6% forecasters were looking for. Core PCE, which strips out food and energy, held at 3.3%, in line with expectations. Both measures rose 0.2% on the month.
The reaction was muted — CNBC reported the 10-year Treasury yield little changed on the day, and the read was that the underlying pace was soft enough to let the Fed stay patient. Mortgage rates are priced off those long-term yields, which is why the survey barely budged. Had the week ended there, this would be a boring post.
Warsh spoke Friday morning at the Kansas City Fed's symposium, his first in the chair's seat after being sworn in this past May. He offered no forward guidance and no reaction function — he argued the practice itself has, in his phrase, "overstayed its welcome" — but he was unambiguous on inflation. His case, as reported by CNBC and others: the better summer readings do not show that underlying trends have meaningfully improved. He pointed to PCE running at 3.7% over the past year and a 4.1% annualized pace over the past six months, described the labor market as effectively at full employment, and questioned whether financial conditions are restraining the economy much at all.
Markets moved accordingly. CME Group futures pricing for a quarter-point increase at the September meeting went from about 35% on Thursday to roughly 59% on Friday, and has hovered around 60% since. On Polymarket, the odds of a rate increase at some point in 2026 pushed toward 69%. None of that is a decision. It is a repricing — and repricing is what mortgage rates actually follow.
On a $600,000 30-year loan — an ordinary size across much of California — principal and interest at 6.66% runs about $3,856 a month, against roughly $3,852 last week. The whole week is worth about $4 a month.
Now the question everyone actually has: what happens to that payment if the Fed raises in September? The honest answer is that a policy increase does not move the 30-year fixed one-for-one, and sometimes does not move it at all. Long-term yields already embed what markets expect the Fed to do — which is exactly why the repricing happened Friday rather than waiting for the meeting.
For scale: if the 30-year itself rose a quarter point to 6.91%, that same loan would run about $3,956 a month, roughly $100 more. That is what a quarter point is worth at California loan sizes, not a forecast. The rate that does track Fed policy closely is the prime rate, which matters below if you have a HELOC. (Estimates assume principal and interest only on a $600,000 loan for the full stated term — no property taxes, insurance, HOA dues, or mortgage insurance.)
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Check My Rate →At 5.98%, the 15-year stayed under 6% for a third straight week, but it rose faster than the 30-year, narrowing the spread to 0.68 points from 0.70. It is still wide by historical standards, so the 15-year is worth pricing out if you have not compared recently.
The standing caveat: a lower rate is not a lower payment. That same $600,000 on a 15-year at 5.98% runs about $5,057 a month, roughly $1,201 more than the 30-year, because you retire the balance in half the time. What you buy for it is total interest near $310,000 instead of roughly $788,000. Paying extra principal on a 30-year captures part of that without committing to the higher payment.
ISM manufacturing lands Tuesday, with JOLTS, ADP, and Challenger layoff figures midweek. Then the main event: the Bureau of Labor Statistics publishes the August employment report Friday, September 4, at 8:30 a.m. Eastern.
It carries more weight than a typical payrolls Friday. One leg of the hawkish case is that the labor market is at full employment — meaning there is no employment cost to tightening further. A soft August print undercuts that leg directly, and it is the last major labor reading before the September 15–16 meeting. Either way, the bond market answers before Freddie Mac's next survey closes.
Nothing in this week's news should tempt you toward your first mortgage. If you need cash for a renovation, debt consolidation, or tuition, a HELOC or home equity loan borrows against your equity as a second lien while your existing rate and payment stay exactly where they are. Weighing that against a full refinance? This comparison covers when each structure makes sense in California.
This is the group with the most direct exposure to September 16. Most variable HELOCs are priced off the prime rate, which moves with the Fed's policy rate rather than the 30-year survey, so a quarter-point increase would generally pass through to your line within a billing cycle or two. The effective fed funds rate held at 3.63% in July, so nothing has changed yet — but if a rising draw cost would strain your budget, this is a good week to ask about converting part of the balance to a fixed rate, which many lenders allow. And if your draw period is closer to ending than you think, here is what changes at that line.
You remain the group this market can genuinely help. With the 30-year in the mid-6s, borrowers who bought at the 2023–2024 peaks may already clear the common rule of thumb that a refinance starts to pencil at roughly 0.75% to 1% of improvement after fees. Whether it does in your case depends on your balance, your closing costs, and how long you plan to stay. Nobody can tell you which way the next print goes — an argument for running the break-even now rather than waiting on a number you cannot forecast.
Two things beat timing the survey by $4 a month: shopping several lenders instead of taking the first quote, which is the whole case for using a broker rather than a single bank, and checking whether your employer opens the door to better pricing. If you are under contract with a closing date near the September meeting, it is also a reasonable week to talk through lock timing.
If you work for a major California organization — Kaiser Permanente, LAUSD, CalPERS, PG&E, UPS, FedEx, and many others — MyRateAdvisor's lender relationships may qualify you for pricing below the survey averages quoted here. Against a week that moved the 30-year by a single hundredth of a point, a relationship-based discount is the far larger variable, and checking eligibility is free with no credit pull.
Rate data: Freddie Mac Primary Mortgage Market Survey and Federal Reserve effective funds rate, via FRED (Federal Reserve Economic Data), as of August 27, 2026. July PCE price index, including headline and core readings and monthly changes: Bureau of Economic Analysis, released August 26, 2026; market expectation figures and the 10-year Treasury reaction as reported by CNBC. Chairman Warsh's keynote remarks, including the six-month annualized inflation pace and his characterization of the labor market and financial conditions: Federal Reserve Board, Jackson Hole Economic Policy Symposium, August 28, 2026, and contemporaneous reporting by CNBC and Benzinga. September rate-increase probabilities: CME Group federal funds futures as reported August 28–31, 2026; 2026 rate-increase odds from Polymarket. FOMC meeting dates: Federal Reserve Board calendar. Week-ahead calendar: Institute for Supply Management, Bureau of Labor Statistics (JOLTS and the Employment Situation for August, scheduled for release September 4, 2026), ADP, and Challenger, Gray & Christmas. Probability figures reflect market pricing at a point in time, not forecasts by MyRateAdvisor, and change continuously. Survey rates are national averages for conventional, conforming loans for borrowers with excellent credit, and may differ from the rate you are offered. Payment figures are illustrative estimates based on the assumptions stated in the article. This article is general information, not financial advice — talk to a licensed advisor about your specific situation. MyRateAdvisor NMLS #1598577.