New York City -- A sluggish economy, cool weather and high prices at the pump tempered retail sales in May, as retailers reported mixed results for the month. Retail Metrics projected an increase of 5.1% for the 25 chains tracked, which would mark the 21st straight monthly gain from September 2009.
Among the May standouts was Costco Wholesale Corp., with a 13% rise in same-store sales. Analysts were expecting an 11.2% increase. However, without gasoline sales and beneficial foreign exchange rates, Costco’s same-store sales would have been 7%.