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Traditionally, these two weeks were the coldest of the year and yesterday was thought to be the coldest given the conditions, National Institute of Water and Atmospheric Research (Niwa) climate scientist Georgina Griffiths said.
Dunedin reached a high of 3.8degC yesterday afternoon, above the three record lowest daily maximums for July of 1.2degC on July 15, 1981, 2.3degC on July 4, 1996 and 3.3degC on July 6, 2007.
Temperatures around the region also failed to break records for minimum temperatures, she said. The wind made conditions feel colder.
"Record low temperatures would typically occur with big, fat, winter highs, clear skies, light winds. In fact, on 12 July 2010, minimum temperatures at Dunedin airport hit -6.7degC."
A snow record from 1972 to 1991 at Dunedin International Airport showed on average snow was reported eight times a year, and at Musselburgh records showed about four falls a year.
Several big snowfalls were recorded in the mid-1990s with the one in 1995 considered to be the "last known bad one".
"We tend to get "clusters" of snowfalls when it is a cold winter as there tended to be multiple events as cold air is dragged north," Ms Griffiths said.