杭州气温开启“先升后降”模式

Group 1 - The first cold wave of the second half of the year is concluding, with Hangzhou experiencing its lowest temperature of 2.5℃, setting a new record for the second half of the year [1] - Following the cold wave, temperatures in Hangzhou are expected to rebound, with a forecasted high of around 19℃ by Sunday [1] - The weather in Hangzhou will remain clear and sunny over the weekend, making it suitable for outdoor activities [1] Group 2 - The likelihood of a cold wave occurring in late November is low due to the frequent southward movement of cold air, which prevents the formation of a strong cold source [2] - However, the frequent cold air incursions will lead to temperature fluctuations, prompting the need for individuals to adjust their clothing and take necessary warming measures [2]