The greenback got a boost from a Wall Street Journal report that Fed chair Jerome Powell plans to hold press conferences more frequently than the current quarterly briefings, which investors interpreted as making every meeting a live chance for a rate hike.
The Fed ends its two-day policy meeting tomorrow morning NZ time, and is expected to raise the federal funds rate a quarter point to a range of 1.75 per cent-to-2 per cent.
Investors also predict a steeper path for higher rates.
"A hike is as good as certain - the question will be what words and dots and other things they put around," said Imre Speizer, senior markets strategist at Westpac Banking Corp in Auckland.
"Most of the market thinking like we like we are, that there's a decent risk of a hawkish narrative, and if you don't get one they might sell the (US) dollar off."
Local data today showed food prices fell in May on cheaper produce, while guest nights tapered off in April as public holidays fell outside that month.
Speizer said New Zealand's pace of inflation will probably pick up through the year as a weaker currency and more expensive oil drive up tradeable consumer prices, although the Reserve Bank's flat track for the official cash rate should remain intact even as other central banks start hiking rates.
New Zealand's two-year swap rate increased 1 basis point to 2.23 per cent and 10-year swaps were unchanged at 3.19 per cent.
The local currency traded at 59.70 euro cents from 59.81 cents yesterday ahead of the European Central Bank meeting later this week. Speizer said that review will be closely watched to see whether the ECB starts winding back its quantitative easing programme.
The kiwi fell to 52.47 British pence from 52.68 pence yesterday, and rose to 77.56 yen from 77.22 yen, with the Bank of Japan rounding out the major monetary authorities meeting this week.
The local currency gained to 92.62 Australian cents from 92.39 cents after a Westpac consumer confidence survey showed improved sentiment across the Tasman, and fell to 4.4903 Chinese yuan from 4.5079 yuan yesterday.