Re: What the heck is "Weather Daemon?"
erasat noticed that his stock weather widget was taking up a fair amount of battery drain so he deleted it and said it helped a lot and shared that. I did the same and it made a noticeable improvement for me too. I tried out some third party weather widgets and they drain too so there's something up with all of them.
That said, it really bites that you can't even have a weather widget running on your Android without battery drain...that was one of my favorite features of the phone a few years back! How is it that they can't figure out a way to update them without sucking up gobs of power? Must be a Lollipop thing because I don't recall this problem at all a few Android versions ago.
I'm using Weather & Click widget and it's great as usual, I've been using it for about 2 years now and it's great.
The key in most, if not all Weather widgets is to set it with specific Cities, and prevent using the Detect my location and GPS options, if you set your specific city it practically doesn't use any battery as it will be updating just at your specific Update Intervals.
So my advice is that if you want to keep using the stock weather widget, just go to settings and disable all GPS and Detect Location settings and set your city or cities manually, besides the obvious battery savings there you may also begin to use your Location with the Quick toggles and turn it on only when you really need it.