According to CME FedWatch data cited Friday, the probability of an October rate hike fell to around 16%, down from nearly 28% on Thursday.

Speaking in Bangkok, Warsh expressed confidence in the U.S. economy but declined to signal the Fed's next move.

The shift came despite hotter-than-expected CPI and PPI inflation reports earlier this week.

The U.S. dollar also weakened as investors increasingly expected the Fed to keep rates unchanged at its October 27–28 meeting.