A decrease in barometric pressure is a sign that a storm might be approaching. As stated earlier, low pressure means the air particles are far away from each other, as a result, the air tends to rise, and when it rises, it gets condensed and produces clouds when clouds are formed, rain and storms follow to release the built-up condensed air. It is important to note that when the pressure drops drastically, it means a storm will follow the rain; however, when it drops slowly, it means it is only going to rain. On the other hand, when barometric pressure increases, then it means, it is going to be good, clear, and cooler weather.