Snow may fall to low levels across parts of the South Island overnight.
Strong winds are battering the North and Upper South Islands, cancelling ferrys and flights, closing highways, and cutting power to homes.
A low from the northwest is set to bring rain, strong winds and snow for parts of NZ.
While the north has humidity and rain, the south of NZ will see snowfall.
Some North Island regions will get up to 13 hours of rain across the day.
Up to 25cm of snow is forecast near the summit of Porters Pass by tomorrow.
Arrowtown School is closed today after buses were unable to drive over the Crown Range.
Heavy rain, damaging winds and snow are forecast across New Zealand.