What's the climate like in Shanghai in the middle and late February?

Every year in Shanghai, it is 65438+ 10. Early October to early February is the middle of winter, which is the coldest time of the year. When the strong cold air in the north moves southward in stages, there will be a strong wind from north to northwest and a short-term strong cooling process. The weather will be fine, cold and dry, and the extreme minimum temperature at night will be around -5℃~0℃. However, when the moderate-intensity cold air in the north frequently supplements and continues to go south, and the warm and humid airflow in the southwest is relatively active, it is prone to long-term low-temperature and rainy weather, with very insufficient sunshine, weak wind from north to northeast, and cold and humid weather. In the middle and late February, the temperature began to rise slowly and the chill subsided slightly. However, from mid-late February to early April, the cold wave in Shanghai is the second high frequency period, with large-scale invasion of cold and high pressure in the north, rapid alternation of hot and cold weather, sunny and rainy weather and unstable weather situation, which is the most dramatic period of temperature change throughout the year.