This year’s back-to-school shopping season has gotten off to a slow start and retail experts have mixed views about how the season, which is crucial for retailers, will progress.

“A lot of it has to do with the weather. People are still in the summer mind-set. People aren’t giving up on summer,” said Curtis Picard, executive director of the Retail Association of Maine. “But it’s only three weeks away. It kind of sneaks up on you.”

Additional Photos

Surrounded by a wall of backpacks at L.L. Bean on Tuesday, Leanne MacKay helps her daughters, Maggie, 13, and Emily, 10, find the right one for their school books. They are from Halifax, Nova Scotia, and said they mixed vacation with buying back-to-school clothes and supplies they could only find in Freeport. They planned on visiting other stores in the popular shopping town as well, according to MacKay. Portand Press Herald photo by Gordon Chibroski

Still, shoppers will be looking for bargains.

“Maine shoppers are going to be spending smartly. They’ll be focused, looking at promotions and discounts. Consumers have become more intelligent buyers over the years,” said James McConnon, professor of economics at the University of Maine. “People may delay purchases by a few weeks to get better deals. People may take advantage of after-Labor Day sales.”

Picard said consumers inevitably will be buying some perennial staples such as clothes and shoes, but predicted that parents will recycle some school items in order to stretch their money. Parents may try to get another year of use out of items siuch as backpacks and lunch boxes, he said.

The back-to-school shopping season, which runs from mid-July through Labor Day, can give retailers an indication of what to expect going into the holidays.

“It’s a very important time for Maine and the national economy,” McConnon said. “It’s second only to the holiday shopping season, and it’s often seen as a barometer of things to come for the holiday period.”

Analysts offer mixed predictions on how healthy U.S. retail sales will be during the back-to-school season this year compared to last year.

The National Retail Federation is predicting back-to-school sales for kindergarten through 12th grade will fall 8 percent from last year to $26.7 billion. On average, parents are expected to spend $634.78 per family on back-to-school items, down from $688.62 last year.

Not everyone agrees that spending will fall this year.

ShopperTrak, which counts and analyzes retail foot traffic, predicts national retail sales will rise 4.3 percent in August.

NPD Group, a retail research firm, said it expects consumers to start their shopping later in the season but spend more this year, especially online. Overall, the group expects back-to-school sales to rise 5 percent by Sept. 1.

The NPD Group expects apparel and footwear, followed by calculators, accessories, school bags and sports equipment to rise, while sales of school supplies will drop.

Leanne Mackay, of Halifax, Nova Scotia, was shopping on Tuesday in Freeport with her daughters Maggie, 13, and Emily, 11, checking out clothes at stores such as Abercrombie & Fitch and backpacks at L.L. Bean.

Her daughters both need new backpacks, which will push the family’s back-to-school spending up from last year, Mackay said. She did not put a dollar figure on her budget.

Martha Dean, of Warwick, R.I., who was shopping with her son Josh and husband Ed at L.L. Bean, said she expects to spend more money this year but also did not put a dollar figure on her budget.

“We’re spending a little more this year. We’re buying a good backpack so it lasts,” she said.

Local retailers said they’re optimistic about the back-to-school season.

“We know anecdotally that back to school sales have been challenging for many retailers, but our sales so far have been above budget and well above last year. And our kids’ division has been performing particularly well in recent weeks,” said L.L. Bean spokesman Mac McKeever.

He declined to give sales figures.

In recent weeks, key retailers, including some that cater to teens, have issued warnings about weak second-quarter results. While August is the crucial back-to-school shopping time, weak sales in July don’t bode well, analysts said.

Macy’s Inc. on Wednseday blamed a disappointing second quarter on consumer reluctance to spend on non-essential items. That has led the store to institute deeper markdowns. The chain’s second quarter sales fell 0.8 percent, well below analysts’ prediction of a 2.3 percent gain in the quarter.

Aeropostale also warned investors that its second-quarter loss will be 42 cents to 44 cents per share, more than double that of an earlier forecast. Rival retailer American Eagle Outfitters also slashed the outlook for second-quarter earnings.

In light of a disappointing retail outlook nationally, some stores are offering deeper discounts in August. Freeport retailers will benefit from a promotion by Amtrak’s Downeaster, which is offering a three-day promotion from Aug. 20 to 22 in which passengers can leave from any Downeaster location and travel to Freeport for $10 one way. Up to two children younger than 15 can ride for $5 one way when accompanied by a $10 adult fare.

The back-to-school promotion is similar to a holiday shopping special the Downeaster ran last year on Black Friday, the day after Thanksgiving and the traditional launch of the holiday shopping season.

“Freeport is the perfect place for back-to-school shopping,” said Janet Dutson, executive director of FreeportUSA, the local merchants’ association.

Chris Cummings, manager of Mexicali Blues in Freeport, said the Downeaster promotion will help bring in more foot traffic and boost sales during the key back-to-school season.

“It seems like a smart promotion. It will help sales for everyone here and allow people from Boston to enjoy the mix of Freeport stores,” Cummings said.