我国大部将出现明显降温，多地气温创下半年来新低

Summary of Key Points Core Viewpoint - The weather across China is transitioning, with northern regions experiencing a cessation of rain and snow, while southern areas continue to face persistent rain. A return to clear and dry weather is expected nationwide starting tomorrow until December 30 [1][2]. Weather Conditions - Northern regions will see a stop to rain and snow, while southern areas will experience increased rainfall, particularly along the Yangtze River and southward [2][3]. - Specific areas such as Xinjiang, Northeast China, and parts of Shandong are forecasted to have light to moderate snow or sleet, while southern regions like Guangxi and Hunan will see moderate to heavy rain [2][3]. Temperature Changes - A significant drop in temperatures is anticipated, especially in Northeast China, where temperatures may fall below -10°C, with some areas like Jilin and Heilongjiang experiencing highs below -15°C [4]. - The cold air mass has already caused noticeable temperature declines in central and eastern regions, with some areas reporting drops of over 6°C [4].