I don't know why, the weather app is continuously running in the background. On the lock screen I don't use any weather widgets, and a force restart doesn't seem to be stopping it.
I’ve got a weather widget on Lock Screen and through the night you can see the screen off battery time is still running and tiny light blue markers are there. Must be the widgets still working through periods of no use and even with do not disturb on. Probably will get refined as we go on.