John,
I just discovered Windy yesterday, so I'm trying to discover which model has the more accurate forecast for mid-day winds at my location (Northern Virginia). This is a one-time need that requires both model data and observation data. But only for one recent month. So an archive going back two months would cover me. I would not be doing a big full-year comparison. For that, I'll just use Windy going forward and see how well it predicts my winds.
Steve