The models used aren’t just statistical models that predict the odds of the next weather pattern, temp, events based on historical data anymore, they’re more like actual world weather models like a video game where they render many different models all slightly different and they pick the most reliable, and the nearest outliers to assess the most likely weather. Climate trends changing as more and more energy is injected into the global model from climate change is easily coded into such models. It’s still chaos because climate and weather are affected by so many different variables all at once, that’s why having a slew of different models is useful and necessary. We are still unaware of all the variables, but have enough to be pretty accurate weeks out, but the further out you get, the less accurate the predictions