Wal-Mart Stores Inc. (WMT), the world's largest retailer, on Thursday said sales at stores open at least a year rose 2.4 percent in September, slightly higher than its preliminary report but still toward the low end of its forecast range.

The world's largest retailer also said it expects October same-store sales to rise 2 percent to 4 percent.

Wal-Mart (search) said on Saturday that its preliminary count showed sales up 2.3 percent in the five weeks ended Oct. 1. It had forecast a rise of 2 percent to 4 percent. Analysts' average forecast was 2.6 percent, according to Reuters Estimates.

Total September sales rose 10.8 percent to $25.74 billion.

Same-store sales rose 2 percent at the company's Wal-Mart division and 4.5 percent at its Sam's Club (search) warehouse stores.