Core Viewpoint - The weather in Zhejiang has been unusually warm and dry since October, with a significant drop in temperature expected due to an incoming cold front [1][2] Summary by Sections Temperature Trends - The highest temperature in Hangzhou reached 19.3℃, with some areas exceeding 20℃, marking a warm December [1] - Since October, the average temperature in Zhejiang has been 17.8℃, which is 2℃ higher than the historical average, and in December, it has been 11.8℃, also 2.2℃ above the norm [1] Precipitation Patterns - From October, the total rainfall in Zhejiang was 104mm, which is 38% less than the historical average, and in December, only 1mm of rain was recorded, a 97% decrease compared to the norm [1] Upcoming Weather Changes - A strong cold front is expected to arrive, bringing significant temperature drops, strong winds, and widespread light rain [1] - The cold front will impact the region from late Friday to Saturday, with temperatures expected to drop to 2-3℃ in urban areas and 0-3℃ in mountainous regions, potentially causing frost and ice [1] Short-term Weather Forecast - On Friday morning, humidity will increase with localized light rain expected, transitioning to cloudy conditions as the cold front weakens [2] - After the rain, warmer weather will return, with daytime temperatures gradually rising, although early morning temperatures will remain low, leading to significant temperature fluctuations [2]

Group 1 - The weather in Hangzhou is expected to change significantly this week, with temperatures dropping below 20°C on Monday and Tuesday due to autumn rain [1] - The lowest temperatures in Hangzhou will reach 12°C to 13°C on Monday and Tuesday, with daytime highs only around 16°C, leading to a noticeable chill [1] - By Wednesday, temperatures are forecasted to gradually rise, reaching around 23°C, as the rain subsides [1] Group 2 - The article emphasizes the importance of considering the minimum temperature when dressing for autumn and winter, rather than just the maximum temperature [2] - A suggested dressing guideline is the "26°C dressing rule," which calculates the total warmth needed based on the day's maximum temperature [2] - For example, if the maximum temperature is 19°C, the recommended total warmth is about 7°C, which can be achieved through a combination of clothing layers [2]