July 1 (Reuters) - Wall Street's main stock indexes opened higher on Monday ahead of manufacturing PMI numbers, with focus also on data later in the week for some evidence of a weaker labor market to firm up bets around interest rate cuts by the Federal Reserve.

The Dow Jones Industrial Average rose 67.34 points, or 0.17%, at the open to 39,186.20. The S&P 500 opened higher by 10.60 points, or 0.19%, at 5,471.08, while the Nasdaq Composite gained 41.29 points, or 0.23%, to 17,773.90 at the opening bell. (Reporting by Ankika Biswas in Bengaluru; Editing by Shounak Dasgupta)