Sydneysiders awoke to record cold weather and frost on Monday.
Richmond airport had its coldest morning since 1987 at -2.1C, the coldest morning for May on record in 23 years of data. The previous was -1.4C in May 2011.
Several sites in Sydney experienced their coldest May morning in 20 years.
Penrith residents awoke to 2C, an unprecedented low for May in 22 years of data, while Horsley Park set a new 20-year record with 1C.
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