Wanaka residents woke to freezing fog and temperatures as low as -7 deg C this morning.
The Queenstown Lakes District Council has also warned motorists of icy conditions in the Upper Clutha.
"We've had reports of freezing fog and black ice between Cromwell and Hawea/Wanaka with some temperatures as low as -7 deg C, brrr.
"If you're not familiar with freezing fog, it's what happens when the fog droplets freeze as they come into contact with solid objects - in this instance the roads so take it slow."
Meanwhile, some suburbs in south Auckland are recording negative temperatures before 7am while the city centre is on just 2 deg C.
"It's actually really cold up there," said MetService forecaster Alwyn Bakker. "We've got Whenuapai at 1C but Ardmore went down to -1 deg C."
With much of New Zealand waking to frosts, Bakker said the chilly temperatures spanned the entire country in the wake of this week's snowfall in the central North Island. The only places escaping the icy start were eastern areas such as Gisborne and the far north.
"It's pretty miserable in Wellington at the moment but you guys are colder than us. Wellington city is between 6 deg C and 10 deg C," he said.
In comparison the coldest place in the country was Tekapo which plunged to a bone-chilling -6 deg C overnight.
Bakker said the single digit temperatures in Auckland would likely warm to reach 12 deg C or 13 deg C by afternoon, with the city enjoying blue skies overhead this morning.
Yesterday Niwa announced last month was the fifth warmest June on record since 1909.
NZ Herald and ODT
