He expects the kiwi to trade in a range of US69c to 70c ahead of news events this week. "All the big events are Thursday, and that's what the markets are focused on," he said.
Markets are widely expecting the US Federal Reserve to lift rates this Thursday and will also be watching for the Dutch election results mid-week, a budget release from US President Donald Trump and Australian jobs data, said Mr Weston.
"It's going to be pretty quiet until then. Other than that we will just be at the mercy of the big dollar," he said.
Domestically the fourth quarter balance of payments and the gross domestic product data will be in focus.
Bank of New Zealand head of research Stephen Toplis said the GDP is likely to come in much weaker than the central bank is forecasting, which "may force the RBNZ into a rethink of sorts".
The kiwi dollar traded at 64.83 euro cents from 65.16c on Friday.
The kiwi traded at A91.61c from 91.74c in New York on Friday. It was at 4.7900 yuan from 4.7852 yuan and 79.61 yen from 79.45 yen. It was at 56.94 British pence from 56.88 pence last week.