I know we have all either made this kind of comment or have heard others make these comments, but let's not forget that these people aren't wrong intentionally. We should not defame weather forecasters or their service to society. These people try to bring us the best weather forecast possible with the science and the tools currently available to them.
Do they get it wrong? Sometimes, but they have made vast improvements over the years, and they give us a very good idea of what the next several days to a week will look like, and that is important. There is no doubt that weather prediction is better now than it has ever been, and I am sure that it will only continue to get better in the coming decades.