Why do many weather forecasting platforms show rain in the next few days, regardless of whether the icon text is accurate or not?

The current weather forecast is generally accurate within two days. What follows is just a trend, which is basically nonsense. For example, after the continuous high temperature warning, it was found to rain ten days later, but it waited for a month before it rained. It was really speechless. Just look at the weather in the next two days, and the next two days can be ignored. It has been raining for a long time recently, but it stopped raining when it turned sunny and cloudy. The last few days should be fine, so it shows rain.