I use YR Norwegian Meteorological Institute’s weather reports.
and have the widget show Precipitation for my chosen city. (work related requirements)
now this might not be perfect for others, but as I live in Finland the weather reports are quite exact and correct.
I have mine running NextCloud for syncing files between Android & my computer.
the nextcloud android client isn’t the best when it comes to automatically syncing… I’ve read that one should use Syncthing for function syncing, but haven’t set up that.