The economic outlook was also bolstered by other data on Monday showing a rebound in construction spending in August. The acceleration in manufacturing activity and the accompanying increase in prices could harden expectations that the Federal Reserve will raise interest rates in December.
The Institute for Supply Management (ISM) said its index of national factory activity surged to a reading of 60.8 last month, the highest reading since May 2004, from 58.8 in August.
A reading above 50 in the ISM index indicates an expansion in manufacturing, which accounts for about 12 percent of the U.S. economy. The ISM said Harvey and Irma had caused supply chain and pricing issues in the chemical products sector. There were also concerns about the disruptive impact of the storms in the food, beverage and tobacco products industries.