For years, while camping in the Florida Keys I've noticed that its forecast temps were several degrees low (routinely less than both actual temps and lower than other weather sources).

Purportedly, Windy is providing data from the selected models but actually visiting the source data (e.g. US NWS) indicates that isn't true.

I've tried to attach a screenshot of Windy's Marathon FL forecast based on the GFS model and screenshot from the NWS for the same location (Unfortunately, in spite Windy's direction to upload screenshots of bugs, there appears to be no way to do that).

As is routine, Windy's forecast temps are lower.
Why!!!!