I sometimes wonder. I will get to target a while before SW thinks I do, because if I weigh in the morning naked I am a few lb less than if I weigh in at group, and obviously that's a more accurate weight than when I'm full of food/water/clothes!
If you really want to weigh every day how about drawing a little graph so you can see the general up/down trends more clearly? Just picking your favourite figure doesn't really work, it will enable you to ignore gains tbh!
But it can feel a lot more encouraging to have an 'official' weigh every week as the difference will be clearer. Every now and then this will mean you have a disappointing loss when you feel like actually you did better, but usually it will correct the next week.