Summary of Key Points Core Viewpoint - The weather forecast indicates that Hangzhou will experience rain and thunderstorms due to weak cold air and the edge of a subtropical high, with temperatures expected to drop below 31°C in the coming days. However, the National Day and Mid-Autumn Festival holiday period will see higher than average temperatures, suggesting a delayed arrival of autumn [1]. Weather Forecast - From September 29, temperatures in Hangzhou will decrease, with highs dropping below 31°C [1] - During the National Day and Mid-Autumn Festival holiday (October 1-8), the weather will be predominantly sunny with fewer rain events, and temperatures will be significantly above normal [1] - The early part of the holiday (October 1-5) will mainly be sunny with localized afternoon thunderstorms, while the latter part (October 6-7) will see a noticeable drop in temperature and precipitation due to a cold air mass moving south [1] Provincial Weather Overview - The overall weather in the province during the holiday will be mostly cloudy, with temperatures higher than usual for this time of year [1] - Certain areas are expected to experience high temperatures ranging from 35°C to 37°C between October 2-6 [1] - By October 7, a weak cold air mass will lead to a temperature decrease, with coastal areas and parts of northern Zhejiang experiencing strong winds [1]

Core Viewpoint - The weather during the National Day and Mid-Autumn Festival holiday (October 1-8) will be characterized by significant rainfall in the Huaxi and Huanghuai regions, with three cold air activities affecting northern areas, leading to temperature drops and potential travel disruptions [5][7]. Weather Forecast - From October 1 to 6, heavy rainfall is expected in regions including northeastern Sichuan, northern Chongqing, central and southern Shaanxi, western Hubei, central southern Henan, southern Shandong, and central northern Jiangsu and Anhui, with localized areas experiencing heavy rain or torrential rain [5][6]. - The Qinghai-Tibet Plateau and northern Xinjiang will see rain and snow, with significant snowfall expected in areas along the Tianshan Mountains, eastern and southern Qinghai, and eastern and southwestern Tibet [5]. - Northern regions will experience three cold air activities, with two weak cold air masses affecting from October 1 to 4, leading to dust storms in eastern and southern Xinjiang, and a stronger cold air mass from October 5 to 7 causing temperature drops of 4 to 8 degrees Celsius, with some areas experiencing drops over 10 degrees Celsius [5][6]. Travel Recommendations - For travel during the holiday, regions such as Inner Mongolia, the Helan Mountains, and the Zhangjiakou Bashang Grassland are recommended due to favorable weather conditions, with temperatures being comfortable and clear skies [8]. - The best conditions for moon viewing during the Mid-Autumn Festival are in the North China Plain, Inner Mongolia, and Ningxia, while areas like Jilin, Liaoning, and Beijing are ideal for autumn foliage viewing [8]. - The southwestern regions, including northern and central Yunnan and Guizhou, are also suitable for leisure and sightseeing, although travelers should remain aware of weather updates in southern China due to intermittent rainfall [8].