A flood of early promotions and longer store hours have spurred a key retail group to raise its forecast for holiday sales.

ShopperTrak predicts sales for the November-December holiday period will increase 3.2 percent from last year, a bigger gain than the 2.9 percent the Chicago-based market research group initially anticipated. Foot traffic is forecast to rise 1 percent for the period, instead of the originally forecast 0.1 percent decline.

Retailers have been pushing Black Friday-style promotions for weeks before the official start of the holiday shopping season the day after Thanksgiving, Nov. 26 this year. The deals have driven shoppers to the malls and retail outlets, said Bill Martin, co-founder of ShopperTrak.

The American shopper has become more frugal and “deal sensitive,” he said. Consumers are making few shopping trips but spending more on each visit, arranging their shopping visits around the most appealing deals and promotions, he said. Likewise, ShopperTrak data shows foot traffic at outlet stores is outpacing that at traditional malls.

Still, Martin cautions that the rosier outlook doesn’t mean consumers are spending like they did before the recession.

“Despite various economic pressures, consumers have remained resilient and found a way to spend throughout 2010, although not at the level retailers experienced prior to the depths of the recession,” said Martin. “Although we are predicting a nearly 3 percent sales rise this season, any small increase has to be seen as relative at this point.”

During the holiday 2009 shopping season, retail sales fell 0.4 percent while total U.S. foot traffic fell 3.4 percent. In 2008, in the depths of the recession, sales declined 5.4 percent and foot traffic plummeted 15.4 percent.

Retailers are  creating more events to draw shoppers through their doors and offering promotions to entice shoppers to spend more once they are there. They are keeping the stores open longer as well.

Kohl’s, for example, plans to open at 3 a.m. on Black Friday, its earliest ever. Sears is opening on Thanksgiving Day for the first time. And Toys “R” Us will start its Black Friday deals at 10 p.m. Thanksgiving Day, two hours earlier than last year.