Like Black Friday, though, many retailers offered online deals that last throughout November instead of limiting them to a single day, potentially reducing Cyber Monday's impact.
On Black Friday, the largest discounts were on computers, televisions and toys, On Tuesday, which is now referred to as Giving Tuesday, pet products and bedding and furniture are expected to have the best discounts at 22% and 13% respectively. The company acknowledged that processing was taking longer than usual in its stores and said it was working on the problem.
Top sellout products: The items that sold out the quickest these holidays were accessories (29 percent), tops (20 percent), footwear (17 percent), dresses (8 percent) and bottoms (8 percent). Macy's CEO Jeff Gennette told CNBC Friday morning that traffic at the department store chain's flagship Herald Square location already looked to be stronger than past year.
Brick-and-mortar sales stayed steady this year compared to Thanksgiving and Black Friday 2016, but Cyber Monday sales are expected to increase by more than 18 percent, according to Adobe Analytics.
Mobile posted new records in representing 47.4% of all visits including 39.9% for smartphones and 7.6% for tablets, while it took in 33.1% of revenue that was distributed by 24% for smartphones and 9% for tablets. Furthermore, 61.1% of visits to retail websites were for mobile devices.
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Fair weather across much of the nation also was factor, said National Retail Federation President Matthew Shay. Mobile transactions are closing at a 12 percent higher rate compared to Cyber Monday 2016.
CHICAGO Retail research firm ShopperTrak said that store traffic fell less than 1 per cent on Black Friday, bucking industry predictions of a sharper decline.
The modest drop, amid a big upswing in online sales, "illustrates that physical retail is still highly relevant and, when done right, profitable", a Shoppertrak spokesperson told CNBC.
In the meantime, there's plenty of busy holiday shopping days to come. That will help their traditional brick and mortar stores compete with online shopping.
It should also be noted that despite the discounts to 90% in the US, not all products can be purchased at online stores.
Overall web traffic to retail sites increased by 11.9 percent on Cyber Monday, with the season average at 5.7 percent.