U.S. homes sold in September at their fastest clip this year, a sign that the housing market is shaking off a slowdown that began in the middle of 2013.

The National Association of Realtors said Tuesday that sales of existing homes rose 2.4 percent from the previous month to a seasonally adjusted annual rate of 5.17 million. Still, the sales rate has dropped 1.7 percent over the past 12 months.