Why do banana trees "forecast the weather"?

In Dominica, the United States, there is a saying: "If you want to know whether it will rain, first see if the banana will cry." . This kind of "rain banana" is a local tree. Because they can accurately predict the weather, Dominicans should plant a few trees in front of their homes before going out, have a look and master the weather.

How does the banana tree predict the weather? It turns out that the skin of banana leaves and stems is very thin, and the whole body seems to be covered with a layer of poncho. Before the rain, the temperature was very high, and it was difficult for the moisture of banana trees to be emitted by the usual transpiration, so it overflowed from the leaves and formed water droplets, which kept flowing downwards. This is what people call the banana tree "crying" after seeing it. Because it rains every day after seeing the banana tree cry, people take the banana tree "crying" as a sign of rain.