Victorians have sweltered through the state's hottest day on record. Temperatures soared well into the 40s in most of the state with the Mallee towns of Walpeup, Ouyen and Hopetoun reaching 48.9 degrees eclipsing the old record set in 2009. A cool change is sweeping through most regions tonight but in the north-west the heatwave will continue well into the weekend.
