The dew point plays a significant role in weather patterns. When the dew point is high, it often indicates warm and humid conditions, which can lead to thunderstorms or heavy rainfall if the air cools and condenses. Conversely, a low dew point suggests dry air, which is common in arid climates or during cooler seasons. Meteorologists use the dew point to predict weather changes, such as the likelihood of fog, frost, or precipitation.