Summary of Key Points Core Viewpoint - The recent cold air mass has led to a significant drop in temperatures in Hangzhou, marking the lowest temperatures of the year so far, with a minimum of 14.2°C and a maximum of 16.8°C recorded [2]. Weather Conditions - The cold air is characterized as "dry cold," which not only brings lower temperatures but also reduces humidity and eliminates rainy weather, leading to clearer skies in the following days [3]. - Wind conditions have been notable, with sustained strong northerly winds causing a significant wind chill effect, making the perceived temperature feel much colder than the actual temperature [2]. Temperature Fluctuations - A gradual warming trend is expected to begin on Thursday, with temperatures potentially rising to 25-26°C by the end of the month, although the increase will not be immediate [3]. - The diurnal temperature range is set to increase, with morning temperatures dropping to 13-14°C and afternoon highs reaching just above 20°C, indicating a clear "cold mornings, warm afternoons" pattern [3].