I don't understand how forecasters work, but the weather is inaccurate on all websites. They said it wouldn't rain, but it does. I'm really mad

I used to use the usual inbuilt weather app. But then I realised that it wasn't always accurate, and I wanted to know exactly what the weather was going to be like today. So I found this https://365weather.us website and now I only watch the weather forecast here. Using this resource is very convenient, there is a lot of important and useful information. I think that this is one of the best sites where you can watch the real weather