Group 1 - The core viewpoint of the articles highlights the impact of cold air on weather conditions in Changsha during the New Year holiday, with reports of sleet and low temperatures expected to continue into early January [1][2][3]. Group 2 - The Central Meteorological Observatory predicts that three cold air masses will affect various regions of China after January 5, leading to fluctuations in temperatures, although their overall strength is expected to be weak [2][5]. - The average national temperature has broken records for three consecutive years, with 2025 recording an average of 11.0°C, which is 1.1°C higher than the normal level of 9.9°C, marking a significant trend in rising temperatures [4]. - The trend of increasing temperatures is evident, with the last five years consistently witnessing record-breaking warmth, indicating a shift in climate patterns [4].

Core Viewpoint - The average national temperature in China for 2025 is projected to reach 11.0℃, surpassing the previous record of 10.9℃ set in 2024, marking the highest temperature since 1961 [1][5]. Group 1: Temperature Records - The average temperature has been consistently breaking historical records, with 2023, 2024, and 2025 being the warmest years on record since 1961 [5]. - A total of 16 provinces and regions, including Xinjiang, Liaoning, and Jiangsu, have recorded their highest temperatures since 1961 [3]. - The top five warmest years have all occurred in the last five years, indicating a trend of increasing temperatures [5]. Group 2: Recent Weather Patterns - December experienced five cold air events, including three significant cold waves, yet the overall temperature remained 2-4℃ higher than the historical average for the month [7]. - Following the recent cold wave, temperatures in southern regions are expected to remain low, with minimum temperatures around 5-6℃ in cities like Fuzhou and Guangzhou [8]. - The forecast indicates a return to normal or above-normal temperatures in many areas of Northeast, North, and Central China in the coming days [10]. Group 3: Long-term Climate Trends - The National Climate Center predicts that most regions will experience temperatures close to or above the historical averages in the near future [12].

Group 1 - The average national temperature in China since December 2025 is -0.90℃, which is 1.71℃ higher than the same period in previous years, marking the second highest since 1961, only after 2016 [1] - Most regions in China, except for parts of Inner Mongolia, Heilongjiang, and western Yunnan, have experienced temperature increases of 1℃ to 4℃, with Hunan and Hubei provinces recording the highest temperatures for this period [1] - The average national precipitation is 7.4 millimeters, which is 24.0% lower than the historical average, showing a pattern of "more in the north, less in the south" [1] Group 2 - There have been five cold air processes since December, which is 1.9 times more than the historical average, with the first nationwide cold wave occurring from December 11 to 15 [2] - The overall warmer temperatures in December are attributed to a weaker East Asian winter monsoon and a weakened Siberian high pressure, leading to insufficient cold air accumulation in northern Asia [2] - The climate prediction indicates that in January 2026, most regions will have temperatures close to or above the historical average, with eastern areas expected to have less precipitation [2] Group 3 - Precautions are advised for low-temperature rain and snow weather impacts on transportation and agriculture in northeastern regions and eastern Inner Mongolia in January 2026 [3] - Continuous monitoring of meteorological drought development is recommended for the middle and lower reaches of the Yangtze River, along with water resource management and forest fire prevention efforts [3]