The mercury has plummeted across the country the past week, with frosty mornings set to continue through the weekend.
State Highway 2 between Gisborne and Opotiki will remain closed overnight after snow and ice made road conditions too treacherous to travel on.
A ridge of high pressure is about to provide some relief from the Antarctic blast battering the country but frosty mornings are still forecast for most areas this weekend.
An icy blast has closed highways through the central North Island, delaying motorists for a second day running.
The wintry weather continues to plague New Zealand's road network with major roads closed on the North and South Islands.
A freezing snap still has its grip firmly on the South Island, and is continuing to make its way up the country.