Interest Rates in March 2026: What Silicon Valley Buyers and Sellers Need to Know Right Now

If you have been watching mortgage rates this month, you have probably noticed they are heading in the wrong direction. The average 30-year fixed rate has climbed to roughly 6.37% as of this week — up about a quarter point from where we started February. That is a meaningful jump, and it is already affecting how buyers and sellers are approaching the spring market across Silicon Valley.

I want to break down exactly what is happening with interest rates right now, what the Federal Reserve just told us, and — most importantly — what this means if you are buying or selling a home in San Jose, Cupertino, Sunnyvale, or anywhere else in Santa Clara County this spring.

Where Mortgage Rates Stand Today

As of the week of March 24, 2026, the national average for a 30-year fixed mortgage sits at approximately 6.37%, according to Zillow. Optimal Blue data shows rates closer to 6.25%, while the 15-year fixed has reached 5.82% — up 17 basis points in just the past week.

To put this in perspective, if you are buying a $1.5 million home in Campbell or Mountain View with 20% down, that quarter-point increase translates to roughly $180 more per month on your mortgage payment. Over 30 years, that adds up to nearly $65,000 in additional interest. Small rate moves create big dollar differences at Silicon Valley price points.

At Silicon Valley price points, even a quarter-point rate increase can mean tens of thousands of dollars over the life of a loan.

What the Fed Just Told Us

The Federal Reserve met on March 18 and, as expected, held the federal funds rate steady at 3.50% to 3.75%. But the real story was in the details. The updated dot plot — the chart showing where each Fed official expects rates to go — now points to just one rate cut in 2026, likely in December, with another possible cut in 2027.

That is a more cautious tone than many buyers were hoping for. Fed officials cited elevated inflation, with the personal consumption expenditures (PCE) price index expected to reflect 2.7% inflation this year — still above the 2% target. GDP growth is projected at a solid 2.4%, which means the economy is not weak enough to justify aggressive rate cuts.

There is some disagreement within the Fed itself. Governor Michelle Bowman has penciled in three rate cuts before year-end, which is far more optimistic than the median projection. That kind of internal debate tells me we are in a wait-and-see period where incoming data — particularly inflation readings and employment numbers — will drive every decision.

What the Forecasters Are Saying

The major housing forecasters are not expecting dramatic relief anytime soon, but they do see rates trending lower by the end of the year.

Santa Clara County homes are selling in just 21 days on average, with inventory tightening as spring demand picks up.

How This Hits the Silicon Valley Market Right Now

Here is what I am seeing on the ground across my featured markets. The spring selling season is building momentum despite the rate environment, and the numbers tell the story.

Santa Clara County currently has about 670 homes for sale. Days of inventory dropped from 59 to 40 days, and the average home is selling in just 21 days. Single-family home prices are averaging $2.34 million, up 1.4% year-over-year. These are not the numbers of a market that is slowing down — this is a market that is tightening heading into spring.

In cities like Cupertino, homes are still selling for 105% of list price with a median around $2.9 to $3.1 million. Los Gatos holds steady near $2.5 million. Even San Jose, where entry points are more accessible in the $998K to $1.3 million range depending on neighborhood, is seeing strong demand from tech buyers who qualify for more than they expect.

For Buyers: The Real Math on Waiting

I hear this question every week: should I wait for rates to drop? Let me walk you through the numbers. Say rates do fall to 5.9% by December, as Fannie Mae projects. On a $1.2 million loan, that would save you about $340 per month compared to today’s 6.37%. That sounds appealing.

But here is the catch. If home prices appreciate even 3% between now and December — which is conservative for Silicon Valley — that $1.5 million home becomes $1.545 million. Your down payment needs to be $9,000 higher, and your total loan amount grows by $36,000. The monthly savings from a lower rate get eaten up by the higher purchase price, and you have lost 8 months of equity building.

For Sellers: Why This Rate Environment Actually Helps You

Higher rates might sound like bad news for sellers, but the data tells a different story. Inventory is tightening — down from 59 days to 40 days of supply. Fewer new listings are hitting the market because existing homeowners with sub-4% rates are reluctant to move. That means less competition for your property.

Serious buyers are still out there and they are motivated. They have already done the math and accepted the current rate environment. The buyers shopping in March and April are not tire-kickers — they are ready to close. If you are thinking about listing your home in Saratoga, Los Altos, or Palo Alto this spring, the window is open right now.

Sellers in Los Gatos, Saratoga, and Palo Alto are benefiting from tight inventory and motivated spring buyers.

The Refinance Opportunity Nobody Is Talking About

Here is something I am telling all my clients right now. If rates do fall to the 5.9% range by year-end as Fannie Mae projects, there will be a massive wave of refinancing activity. Lenders will be flooded. Processing times will stretch from weeks to months.

The buyers who purchase now and lock in their rate are going to be first in line when refinance rates drop. They will already have their property, their equity will have grown, and they will be in a much stronger position than someone who waited and is now competing with a flood of other buyers entering the market at lower rates.