(Reuters) - U.S. stock index futures rose on Tuesday after largely in-line consumer prices data kept bets of a Federal Reserve interest rate cut in September in tact.

A Labor Department report showed the Consumer Price Index (CPI) rose 0.2% on a monthly basis in July, versus the 0.2% increase forecast by economists polled by Reuters. Annually, it stood at 2.7%, compared with an estimated 2.8% rise.

The core figure, which excludes volatile food and energy components, rose 0.3% on a monthly basis, compared with expectations for a 0.3% advance. Annually, it came in at 3.1%, versus an estimated 3% increase.

At 8:31 a.m. ET, S&P 500 e-minis were up 22.75 points, or 0.36%. Nasdaq 100 e-minis were up 101.5 points, or 0.43% and Dow e-minis were up 173 points, or 0.39%.