This story has been made freely available as a public service to our readers. Please consider supporting SCMP’s journalism by subscribing. Hongkongers can expect a cool autumn breeze early next week, as temperatures are set to “appreciably” fall to as low as 22 degrees Celsius (71.6 Fahrenheit), the weather forecaster has said. The Hong Kong Observatory said the mercury was expected to gradually drop from 27 degrees on Sunday to 24 degrees the next day, and then further to 22 degrees two days...