This story has been made freely available as a public service to our readers. Please consider supporting SCMP’s journalism by subscribing. A cold front will begin to affect Hong Kong on Monday night, pushing temperatures to as low as 15 degrees Celsius (59 Fahrenheit) the following day, the city’s forecaster has said. The Observatory said on Sunday that the cold front was expected to move across the coast of Guangdong from Monday evening to early Tuesday. “Under the influence of the associated...