I am also a bit bothered by this change and would appreciate the return of the "Forecast for this location" button when clicking on a site with observed weather. I operate a weather station that is displayed on Windy and my habit has always been to click on my own weather station, and then select the "Forecast for this location" option to quickly get to my own local forecast. Now I have to click "near" my weather station if I want the forecast, which is a friction, and I can no longer see recent observed conditions plus the local forecast in a single click-through. I click the weather station for observations, then I need to back out of it and click somewhere else near to it for the forecast. Also, to click "near" the weather station, and not kms away, one has to zoom way in first or it will just bring up the station with no forecast option.
I would note, this seems to be bringing the mobile version behaviour to the web client. This behaviour always frustrated me on the mobile client too, but I mostly just ignored it and used the web client 95% of the time instead. I'd like to see forecast included as an option for a clicked observation site in mobile too really. I would use it more then.