"No-one is expecting any change in policy, but we might see a few words reshuffled to reflect the less upbeat US economic outlook," said the BNZ's Jones. "Tapering of Fed asset purchases still looks like a story for next year to us. The biggest risk currency markets face is probably that a less dovish than expected statement revives the US dollar.
"The speculative community went outright short the US dollar last week for the first time since February," Jones said. "Some of these short positions were undoubtedly bought back overnight as investors factored in the risk of a less dovish Fed."
In New Zealand today, Prime Minister John Key is speaking at a luncheon in Wellington.
The Reserve Bank is scheduled at 3pm to publish its balance sheet data for September which will show its net purchases and sales of the currency.
The local currency advanced to 80.95 yen from 80.57 yen yesterday after Japanese reports showed household spending, small business confidence and retail trade were stronger than forecast.
"This has sent the yen weaker as the policies of Abenomics gain traction", ANZ New Zealand agri economist Con Williams said in a note.
The kiwi was little changed against other currencies, at 87 Australian cents from 86.94 cents yesterday, at 60.01 euro cents from 59.98 cents and at 51.41 British pence from 51.35 pence.