Why The Indo-Gangatic Plain gets some rainfall in the months of December and January?

The Indo-Gangetic Plain receives some rainfall in December and January primarily due to the western disturbances, which are weather systems originating in the Mediterranean region. These disturbances bring moisture-laden winds that can result in precipitation, including rain and snow, especially in the northern parts of the plain. Additionally, the winter months can experience changes in temperature and atmospheric pressure that contribute to localized weather patterns, facilitating winter rains in the region.