Many Australians will receive the greatest gift of all this Christmas Day—good weather. The Bureau of Meteorology has released its first official Christmas Day forecast and it is promising warm and dry weather for much of the country. A high pressure system moving east to west across southern Australia will lead to mild and settled conditions, said meteorologist Jackson Browne on Sunday. There’s a chance of rain and storms for the northern half of the country, including places like Weipa in the Gulf of Carpentaria and extending into the Northern Territory, however. That’s due to tropical moisture coming in from Indonesia and the Coral Sea. The mercury in Brisbane, Sydney, Melbourne, Canberra, and Adelaide should peak between 27C and 30C degrees. Perth residents will be sweating a little more, with an expected top of 34C degrees. That’s the same top as Darwin, where there’ll be a shower or two. Browne …