Christmas Day is set to be a scorcher in Perth, with temperatures expected to reach 37 degrees Celsius.
- Perth’s temperature is predicted to hit 40C today and stay at 22C tonight
- The scorching conditions are forecast to ease to 33C by Sunday
- The impact of the heat on train tracks could delay services today
Less than a week ago, the Bureau of Meteorology predicted Christmas Day would rise to a maximum of 31 degrees Celsius, but the changing position of the surface trough along the west coast…