On the mountain, I feel the weather changes quickly. It's sunny for a while, cloudy for a while, rainy for a while, and hail for a while. What is the reason?

1 elevation changes, resulting in temperature changes, and the temperature drops by 0.6℃ for every elevation increase of 100 meters.

In addition, during the day, the peak temperature rises rapidly, the air pressure decreases and the air rises, which is easy to cause rainfall, while the valley temperature rises slowly, the air pressure is high and the air sinks. There is a wind blowing from the valley to the top of the mountain during the day, but it is just the opposite at night.

Moreover, the wet airflow on the windward slope is easy to precipitation, while the windward slope often forms foehn and dry heat.