The central bank has raised the federal funds rate by 25 basis points at seven straight meetings since June 2004.
Short-term US rates stand at 2.75%, above the euro zones comparable rate of 2% and virtually zero percent in Japan.
As of 1:50 am EST, the euro was slightly down at around $1.3070, not far from a one-month low near $1.3055 marked on Tuesday.
The dollar bought around 105.35 versus 105.63 in late US trade, dragged down by a drop in euro/yen. It had risen to a one-month high around 105.70 yen in the previous session.