U.S. factory activity surged to a more than 13-year high in September amid strong gains in new orders and raw material prices, pointing to underlying strength in the economy even as Hurricanes Harvey and Irma are expected to dent growth in the third quarter.

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.