Mountains can influence weather patterns in several ways. One key factor is orographic lift, where air is forced to rise as it encounters a mountain. As the air rises, it cools and can reach its dew point, leading to cloud formation and precipitation on the windward side of the mountain. This can result in higher levels of rainfall or snowfall in mountainous regions compared to surrounding areas. Additionally, mountains can create barriers to the movement of air masses, leading to differences in temperature and precipitation on either side of the mountain range. Overall, mountains play a significant role in shaping local weather patterns and can contribute to regional climate variations.