Weather forecasting is a black art at the best of times. You can look at the existing weather pattern today, then using probability models based on those weather patterns, forecast tomorrow’s weather. We all know that this only works sometimes over a 5-day period. But now there are people who want to sell services for pinpointing weather conditions on a daily basis for a 90 day period.
A private company known as AccuWeather is offering the waiting public a 90-day weather forecast, selling to consumers the feeling of control over the distant future. There is not much anyone can say about weather in the long term except that “winter is cold” and “summer is hot”. The rest is all the stuff of farmer’s almanacs and crystal ball gazers. AccuWeather is not telling anyone (at least not yet) how they are able to forecast specific weather conditions on specific days over a 90-day period. But this is what they are doing. So apparently, you can know how to pack your suitcase for that trip to New York 60 days from now, since you will know that on that day there will be 1.5 inches of rain.
This is not that new. AccuWeather already has had a 45-day forecast, and so, according to their press release from April 11, 2016, they are providing a 90-day forecast, driven to “greater challenges” such as this by consumer demand. They claim to be able to forecast on this scale with Superior Accuracy™. (Yes, that phrase is trademarked by AccuWeather).
This forecasting is not endorsed by any existing government weather service, college meteorology department, or university professor that knows anything about forecasting the weather. But I am sure that there are enough gullible people that want that feeling of control who find things like “truth” (the truth that weather is chaotic, and too influenced by “the butterfly effect” to be knowable on this scale) to be inconvenient. AccuWeather probably knows that no one will take this seriously except a small group that just wants that feeling of predictability and control in their lives. And that is what AccuWeather is really selling: your feelings.