Some general notes to add to this thread:
Windy does not create any forecast data but instead only visualises forecast and actual data received from various third party providers.
There are many useful but also complex and expert level tools and data available via Windy, therefore the user must always take care:
To understand what information they are displaying and viewing
To understand from where and when the information was sourced
To understand what this information actually means
Comparing Forecast data with Actual data can be a common mistake.
Hope this helps :)