Mortgage Rate Forecast & Predictions
Our mortgage rate predictions and weekly mortgage rate forecast for the week of September 14 – 18, 2026 point to a broadly falling path, with the 30-year fixed at 7.01% and the 15-year fixed at 6.39%. Our 5-day outlook is built from FRED data, Treasury yields, and the economic calendar.
5-Day Mortgage Rate Forecast: September 14 – 18, 2026
Our mortgage rate predictions for the week of September 14 – 18, 2026 map the likely path for the 30-year and 15-year fixed rate, day by day. Each forecast is built from FRED rate data, Treasury yields and the published economic calendar, and we revise it as the week's actual prints come in, so these are working predictions rather than a one-off call. For the latest daily numbers, see our Daily Mortgage Rates page.
| Day | Date | 30-Yr Forecast | 15-Yr Forecast | Pressure | Key Driver |
|---|---|---|---|---|---|
| Day 1 | September 14 | 6.97% | 6.27% | ▲ Rising | Actual: fourth straight rise to a new one-year high; base case was 6.89%, above the top of the published range |
| Day 2 | September 15 | 7.01% | 6.39% | ▲ Rising | Actual: first print above 7% in a year, a day before the Fed; the 15-year jumped 12 basis points |
| Day 3 | September 16 | 6.88% | 6.29% | ▬ Neutral | FOMC raised the target range to 3.75%-4.00% (12-0); retail sales +1.2% in August; observation publishes Thursday |
| Day 4 | September 17 | 6.85% | 6.26% | ▼ Falling | First full session after the hike; housing starts (8:30 a.m. ET); Freddie Mac's weekly survey |
| Day 5 | September 18 | 6.84% | 6.25% | ▼ Falling | Industrial production (9:15 a.m. ET); post-Fed repricing settles |
Should You Lock or Float This Week?
Run the numbers with our Refinance Calculator to see how much you could save at today’s rates, or use the Mortgage Calculator to estimate your monthly payment.
30-Day Mortgage Rate Forecast
Over the past 30 days the 30-year fixed has traded between 6.66% on Aug 26 and 7.01% on Sep 15, and sits at 7.01% today — 35 basis points higher across 21 published sessions. Our 30-day mortgage rate forecast starts from that range rather than from a headline: absent a surprise in the inflation or jobs data, a month of trading tends to stay inside the band it has just set.
What would break the range: an inflation print away from expectations, a jobs report that shifts the Federal Reserve’s path, or a sharp move in the 10-year Treasury. Each is a condition, not a prediction — we update this page as the data lands.
15-Year Mortgage Rate Forecast
The 15-year fixed stands at 6.39% today. Our 15-year mortgage rate forecast for September 14 – 18, 2026 keeps it between 6.25% and 6.39% across the week. The 15-year tracks the same bond market as the 30-year, so it moves in the same direction; what changes is the size of the discount lenders attach to the shorter term.
The shorter term is a cash-flow decision, not a discount: the payment is materially higher and the total interest dramatically lower. Model both on the amortization schedule calculator before choosing.
Mortgage Rate Predictions: Common Questions
Our forecast for the week of September 14 – 18, 2026 calls the direction falling, with the 30-year fixed around 7.01%. That is a conditional read, not a promise: it holds if the scheduled data lands near expectations, and it breaks if an inflation or jobs print surprises. The full week-by-week detail is in this week's forecast.
Over the past 30 days the 30-year fixed has run between 6.66% and 7.01% and is 35 basis points higher over that period. A 30-day view starts from that band; it widens when the economic calendar is heavy and narrows when it is quiet.
The 15-year fixed is at 6.39%, and our forecast for September 14 – 18, 2026 keeps it between 6.25% and 6.39%. It follows the same bond market as the 30-year, so it moves in the same direction rather than independently.
A weekly forecast is a directional read built from the bond market and the published economic calendar, not a guarantee. It is most reliable in a quiet week and least reliable around an inflation print or a Federal Reserve meeting, which is exactly when locking matters most.
Full detail is in this week’s mortgage rate forecast for September 14 – 18, 2026.
How We Build the Mortgage Rate Forecast
Compare how rates have moved over time on our Mortgage Rates History page, or browse the Weekly Rate Recaps for past performance summaries.
Sources: Optimal Blue (OBMMI) via FRED · Federal Reserve monetary policy · Freddie Mac PMMS. Forecasts are estimates, not guarantees.
