Online spending soared $24.1 billion across U.S. retailers during the stretch from July 8 to 11 – dubbed "Black Friday in Summer", outpacing Adobe Analytics' prior forecast, as eager shoppers rushed to snap up deep discounts on back-to-school essentials.

The figures apply across all online retailers for Amazon Prime Days. Tariffs and economic uncertainty are on the minds of shoppers as they prepare for Amazon's summer Prime Day sales. But at least one company is forecasting that sales for the online sales event will break records as budget-conscious shoppers look for deals.