At Ferguson Hardware in Catonsville, Ron Young said he sold his last bag of ice melt just before 10 a.m. Wednesday. The weather has helped his business, but a shortage of product then held it back.

"It's good, but we wish we had more inventory," Young said.

The Ace Hardware store on Light Street in Federal Hill ran out of ice melt Wednesday night yet had lots of foot traffic Thursday. It was one of the few businesses open in the neighborhood.

Employees made a special trip to a supplier in White Marsh for more ice melt, buying a ton of salt and splitting it into 10-pound bags. By 10 a.m. Thursday, only several dozen bags remained, though the store limited them to two per customer.

"This is what's left," Dave Evans said, pointing to the half-empty shelves. "We got a ton of salt, and it's all gone."

After lows in the teens through the weekend, temperatures could reach the 40s by Tuesday and the 50s, possibly close to 60 degrees, later in the week.

Until then, opportunities for sledding and snowballs were expected to last. A system bringing an inch or two of snow was forecast to pass through the region late Friday night into Saturday morning.

Five-year-old Avery Rothschild and Madeline Kopecky, 7, were among many children enjoying the snow in Riverside Park in South Baltimore on Thursday morning — but the children weren't the only ones having fun.

"Look out," yelled Steve Kopecky before lobbing a snowball at his daughter and her playmate.

Baltimore Sun Media Group reporters Carrie Wells, Amanda Yeager, Andrea K. Walker, Lauren Loricchio, Jessica Anderson, Julie Scharper, Richard Gorelick, Kevin Rector, Pamela Wood and Meredith Cohn contributed to this article.