How does Zhuge Liang predict the weather?

Zhuge Liang, who lives in Nanyang (now near Xiangyang, Hubei) not far from Chibi, has a deeper and more specific understanding of the weather and climate laws around Chibi than Cao and Zhou. The northwest wind is only a climate phenomenon, and the east wind can appear under the climate background, which is a weather phenomenon. In military meteorology, in addition to climate laws, weather laws must also be considered as a supplement. At that time, Yan accurately predicted the time of easterly wind based on the analysis of weather and climate change and her own experience. However, in order to fool Zhou Yu, he set up an altar to worship God.