When does it rain in Yishui?

According to the weather forecast, it will rain on Saturday this week

Weather forecast (measurement) or meteorological forecast (measurement) is to use modern science and technology to predict the state of the earth's atmosphere at a certain place in the future. predict. Since prehistoric times, humans have begun to predict the weather to arrange their work and life accordingly (such as agricultural production, military operations, etc.). Today's weather forecasting is primarily based on collecting large amounts of data (temperature, humidity, wind direction and speed, pressure, etc.) and then using current knowledge of atmospheric processes (meteorology) to determine future air changes. Due to the chaos of atmospheric processes and the fact that today's science does not finally have a thorough understanding of them, weather forecasts will always have a certain amount of error.