MetService has issued a number of road snow warnings across mountain roads including Porters, Lewis and Arthur's Pass.
The central North Island is also expected to see snow with motorists using the Napier-Taupō Rd warned to expect a dusting near the summit today, with around a centimetre of snow covering the ground.
While the snow was expected to pass through rapidly, it was expected to fall to fairly low levels across the South Island, said the forecaster.
Snow was forecast down to 400m in many areas, affecting some higher roads and passes.
Some in the south are reporting snow has fallen down to 200m on the Canterbury plains this morning saying it is not only heavy but low.
MetService forecasters said a shift in wind direction across the country was responsible for the sharp temperature drop for the next few days.
Mount Hutt College in Methven today said while a light dusting of snow had fallen overnight the school was still open and all buses were running as usual today.
But it is tomorrow the bite will really be felt keenly across the country with cold air plunging daytime temperatures up to seven degrees cooler everywhere.
Christchurch will reach a chilly 10degC and Ashburton and even icier -3degC.
Hamilton will be waking to a near-freezing 2degC and Wellington will reach a maximum of 10degC today.
- Star News