American consumers are tightening their purse strings this holiday season.

Sales at retailers fell flat in September, another sign that the economy is likely to slow in the coming months as interest rates rise and consumers pull back on spending. Retail sales are a major part of consumer spending.

Retail sales were forecast to rise 0.3% in September, according to economists polled by The Wall Street Journal. Receipts increased by 0.3% if auto dealers are excluded. (Automobile sales can skew the overall retail spending pattern.)

Online holiday sales are expected to rise by just 2.5% to $209.7 billion this year, the slowest rate of growth since 2012, according to data released Monday by Adobe ADBE, -0.91%, the software and market-research company.

To put that in context: Last year, online holiday spending rose by 8.6%. Consumers are uncertain about returning to physical stores due to lingering public-health concerns due to COVID-19, experts said, and hurting due to record-high inflation.

“The shape of the holiday season will look different this year, with early discounting in October pulling up spend that would have occurred around Cyber Week,” Patrick Brown, vice president of growth marketing and insights at Adobe, said.

Despite predictions of single-digit growth online this season, consumers have already spent over $590 billion online this year between January and August, up 8.9% year-on-year, showing the “resiliency” of online sales, he added.

Americans are expected to spend earlier this year, and take advantage of Amazon’s AMZN, -1.69% second Prime Day (Oct. 11-12), Brown said. During the first Prime Day event in July, consumers spent $73.7 billion, up 21% on the year.

“While consumers remain willing to spend, many families are feeling increasingly constrained by elevated prices and rising interest rates,” Gregory Daco, the chief economist at EY Parthenon, told Fox Business.

What’s on sale

Brown said the data suggests record-high discounts this holiday season — up to 32% or more in some cases — as retailers attempt to unload their inventory in the face of weaker consumer spending.

Adobe’s consumer-spending analysis covers over 1 trillion visits to U.S. retail sites, 100 million stock-keeping units, and 18 product categories. The report covers the 2022 holiday season, from Nov. 1 through Dec. 31, 2022.

Discounts for computers are expected to reach 32% (up from 10% in 2021), electronics discounts are expected to hit 27% (up from 8% last year), while discounts for toys are seen at 22% (up from 19%), the report added.

Televisions will see steep discounts of 19% (up from 11% in 2021), apparel at 19% (up from 13%), appliances at 18% (up from 4% ), sporting goods at 17% (up from 6%) and furniture and bedding at 11% (up from 2%), Adobe said.

The children’s show “CoCoMelon” was a breakout hit during the pandemic. Adobe says CoCoMelon toys are among the most popular this season.

Netflix Inc.

When sales are expected to hit

The biggest discounts are expected to hit between Thanksgiving and Cyber Monday.

Thanksgiving Day (Nov. 24) will be the best day to shop for electronics. Black Friday (Nov. 25) will have the biggest discounts for TVs.

The Saturday after Thanksgiving (Nov. 26) will have the biggest discounts for toys, with the biggest deals for apparel and sporting goods on Sunday (Nov. 27), and the best computer and furniture deals on Cyber Monday (Nov. 28).

Based on Adobe data and social-media buzz, the most popular toys this season are expected to be the Got2Glow Fairy Finder, Mini Brands, Squishmallows, LOL Surprise Dolls, Bluey toys, Disney Encanto DIS, -0.57% and Cocomelon, Adobe added.