Why does Siguniang Mountain rain in the afternoon and at night?

Plateau climate. According to the weather network, Siguniang Mountain is a typical plateau climate, with cool in the morning and evening, hot at noon, blue sky and white clouds, bright stars at night and fresh air. However, due to the high altitude, some people will have different degrees of altitude sickness. Siguniang Mountain has the largest rainfall in summer from June to September. It usually rains on the first night and night, and a sea of clouds appears the next morning. From 10 to 14 in the morning, the clouds gradually disperse, and the weather will change at night.