I primarily rely on Windy for weather forecasts, which I find exceptionally useful due to its ability to compare multiple models. The variety of overlays available makes it an indispensable tool for all my weather-related needs.
Windy uses some of the models mentioned including GFS, you can select the model you want to use. So I’m not sure it would be any more accurate than the Apple Watch.
If you're simply seeking basic weather information, then what you receive from your Apple Watch won't differ much. However, if you prefer to analyze and interpret the raw data yourself, Windy stands out as an excellent resource. It aggregates numerous data sources, offering a comprehensive platform for informed decision-making regarding the weather.
I see what you mean thanks. Have you ever sen WunderMap? Not quite in the same league just an interesting source of information. It's kind of like windy, but based on near realtime data from personal weather stations around the country. Kind of fun.
[0]: https://windy.com