我国大部气温继续回升，今起两股冷空气接连来袭

Group 1 - The core viewpoint of the articles indicates that a significant temperature rise is observed in most parts of China, with temperatures exceeding 15°C in southern regions, but two cold air masses are expected to bring temperature drops starting today until the New Year holiday [2][3][7] - The temperature in the central and eastern regions has risen significantly, with increases of 4 to 10°C, and the 0°C line has moved northward to southeastern Inner Mongolia [2][3] - The highest temperature in Wuhan is expected to reach 17°C today, while the lowest will be only 2°C, indicating a substantial day-night temperature difference [2] Group 2 - The weather is expected to remain dry in most parts of the country today and tomorrow, with little rain or snow, but precipitation is forecasted to increase starting the day after tomorrow [3][5] - Snowfall is expected to develop in northeastern regions today, with small to moderate snow being the primary form of precipitation [3][4] - By the day after tomorrow, rain and snow will expand from the southwestern regions to parts of the northwest, Jianghan, and Huanghuai [5][7]