Sydney and parts of NSW swelter through temperatures in the 30s before plummeting 10C within hours

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What happened
Temperatures in Sydney’s outer west peaked at 35C and 32C in the city on Monday before a cool change from the south-east Sydney and parts of New South Wales have sweltered through an “unseasonably warm” weekend, with temperatures climbing more than 10C above the September average, before a cool change swept much of the coast on Monday. The early burst of heat, part of a classic “ spring rollercoaster ”, brought summ…
Summary assembled by rule from the sources below