Single digit overnight temperatures and wet weather can be expected for much the country this week as broad ridge of high pressure moves over New Zealand early this week.
MetService meteorologist Dom Barry said the ridge was "dirty" and that it would bring showers to northern, western and southern areas on Monday and Tuesday.
"It will be disrupted by a low pressure system and its associated fronts, which approach from the west, bringing wet weather as we head into Wednesday."
Wet weather will impact the South Island on Wednesday into Thursday and then move up the country the North Island on Thursday into Friday, Barry said.
"This is a double-whammy feature with rain bands coming from the south and the west, combining, so we are expecting just about everyone to see some form of rainfall in the period from Wednesday to Friday."
Temperatures are expected to hover around the early to mid-teens for most places throughout the week, with some areas set for sub-zero starts as has been the trend over the last few days.
However, the wet weather is not expected to stick around.
Barry said the rain system has another ridge behind it and appears to be "fast moving".
"Much of the rainfall should be gone by the end of the working week, although some precipitation will linger about southern and eastern Te Ika-a-Māui/North Island."
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