跨年夜长沙或迎寒潮雨雪天气

Group 1 - A cold air mass is currently affecting China, with temperatures expected to rebound after December 26 [1] - Central Meteorological Observatory forecasts frequent cold air masses until the end of the year, with significant temperature drops expected during the New Year period [1] - From December 31, 2025, to January 3, 2026, a cold air mass is predicted to bring temperature drops of 6-8°C, with localized areas experiencing drops of over 10°C [1] Group 2 - Snowfall is possible in regions such as North China, the middle and lower reaches of the Yangtze River, Jiangnan, and Guizhou during the New Year [2] - The weather forecast indicates that from December 26 to 28, Hunan will experience mainly cloudy to sunny weather, with low temperatures requiring residents to dress warmly [2] - The average temperature in regions like Xinjiang's southwest, eastern Inner Mongolia, northeastern areas, and western Yunnan is expected to be 1-3°C lower than the same period in previous years, while most other regions will see temperatures 1-2°C higher [3]