Market sentiment on the Fed's next move has flipped dramatically in just one month, and inflation data released this morning may have sealed the deal before traders even had time to react.

The Fed's September rate decision hinges on August CPI and PPI data due September 10-11, with inflation still well above the 2% target.

Fed rate hike possibility for September rises to 57%. Rate hike in September at 45% YES.

August CPI report critical for Fed's rate decision. Rate hike by September meeting at 63.5% YES.

Markets are now betting on a 90% chance of a rate hike at Wednesday's Fed policy meeting.