Spring has finally arrived across southeastern Australia with most regions receiving their warmest weather since the middle of autumn. After a cold start to September, temperatures on Friday climbed more than eight degrees above average through parts of Victoria, NSW and SA, nudging 35 degrees over the interior. Melbourne reached a pleasant 25 degrees, their warmest day since April. Most of Sydney also enjoyed their warmest day since April with highs climbing to 26 degrees in some suburbs. It will become even hotter on Saturday as strengthening northerly winds spread warm tropical air to the country’s southern coastline. Temperatures are forecast to reach 27 in Sydney, 25 in Melbourne, 24 in Adelaide and 23 in Canberra. A pair of fronts will lower temperatures back to typical September levels by Monday but another spell of summery weather is likely towards the end of next week.