Horses,
I did a little bit of research on your claim that the ECMWF is more accurate since I honestly didn't know much about weather models. Turns out there a a few of them but ECMWF and the US' GFS model (made by the US NOAA Weather Service) are the two biggies.
What I learned was sort of interesting. It turns out the ECMWF is GENERALLY more accurate the closer to the present than GFS but the inverse is true also. So an app that uses ECMWF (like Windy) is more accurate say for the next two or three days but beyond 3+ days, an app using the GFS model starts to become more accurate. However, in more extreme local weather conditions, the GFS has a slight advantage the closer to present. Some apps, like Windy, allow you to choose which model you want to use (click on the three horizontal bar circle thing in the lower right corner and then scroll down to the Forecast Model section) while others like Accuweather seem to use their own proprietary model based on blending the various weather models out there.
All that said, I still like how the NOAA Hourly Graphic chart shows the amount of rain forecast as, to me, that is very important information as to whether I want to ride or not based on not "weather" it will rain but how much rain. I will have to start looking at the various models for the temp, wind, etc. forecast for the next day or two to see what I like but it looks like the ECMWF apps may win out.
Learn something new everyday! Thanks, John