The MetService is warning motorist to watch out for black ice on roads over the next few days and nights.
Widespread frosts are also expected.
MetService meteorologist Andrew James says that though the wet weather is over for now for most, temperatures will remain cold for the next couple of days.
"This front was the leading edge of a colder air mass, so it’s already cold,” says Andrew. “There is a ridge of high pressure behind this cold front, which leads to plenty of clear skies and light winds.
A cold front moved up the country during Saturday, bringing a spell of cold, wet and windy weather.
Many parts of New Zealand experienced brief heavy rain, with Levin recording 16.6mm in one hour and 36.6mm over Saturday. The front also brought a dusting of snow to the Desert Road, and some of the higher South Island passes.
“Temperatures will be even lower overnight tonight and tomorrow as there won’t be much cloud to provide insulation,” says Andrew.
"There will be widespread frosts and there could be black ice on roads as well, so take care if you’re driving.”
This ridge remains over Aotearoa through to the end of Monday, and the country is then affected by a series of fronts and troughs.
A general deteriorating trend in the weather is expected during the week.