12月的开场，冷空气赶来"捧场"，周一，东路弱冷空气悄悄渗透，杭州云系增多，气温小幅下滑， 主城区最高温18℃，相比于上周日暖如初春的23℃，体感上凉意明显。接下来，降温"主力"即将抵达， 12月第一波冷空气来势汹汹，山区甚至可能会有小雨夹雪，一场"冷暖反转剧"即将上演。 值得注意的是，冷空气南下也伴随着外来污染物的输入，受其影响，周一白天杭州、湖州、嘉兴、 绍兴已经有轻度污染，傍晚到夜里浙北地区部分有霾。接下来，冷空气"主力军"到场，污染物浓度或明 显上升，空气质量转差。在此提醒易感人群出门务必做好防护，口罩记得戴好，减少户外停留时间，保 护好呼吸道健康。 在冷空气抵达之前，先来回顾下"反常"的11月。杭州市气象台数据显示，11月杭州站平均气温达 13.9℃，比常年同期偏高0.6℃，暖意明显；但累积降水量只有28.5毫米，比常年少了约62%，干燥成了 主旋律。全国范围内，11月下旬我国平均相对湿度53.3%，为1961年以来同期最低，浙江为同期第二干 燥。 经历了最干燥的11月，12月的首场冷空气将带来好久不见的雨水。 市气象台表示，周二下午起，一股西路冷空气将强势登场，带来明显的降温、弱降水和北风增大过 ...

Core Viewpoint - The recent high-temperature heatwave in Suzhou has shown signs of abating with the arrival of rain, marking a notable weather pattern shift as the city prepares to enter the White Dew solar term on September 7 [1] Summary by Relevant Sections - **High-Temperature Duration and Records** - Suzhou experienced a continuous high-temperature heatwave lasting 17 days as of August 31, which is relatively rare for this time of year [1] - The city recorded 37 high-temperature days this year, with 21 occurring in August alone [1] - The highest temperature reached 39.2°C on August 24, marking a new high for the summer season, while the average temperature that day was 31.4°C, also a historical high for late August in Suzhou [1] - **Weather Forecast and Temperature Trends** - The forecast indicates significant rainfall expected on September 1-2 and September 7, with scattered thunderstorms in other periods [1] - Due to the rainfall, temperatures are expected to decrease initially, but will rise again mid to late week, with maximum temperatures around 35°C projected for September 5-6 [1] - It is anticipated that Suzhou's rainfall in early September will be above the historical average, and temperature fluctuations will occur, with average temperatures in early September expected to be higher than usual [1]