I'm someone whose weight easily oscillates by 2kg (1kg up/down from my average trend line), and it took a while to accept only the trend line over several weeks matters.
I was in Europe in April for ten days and same amount of time in December. As noted I weigh myself daily and each time I came back i was 169 pounds and maintained my weight to under 175 for awhile the 1st time and not so long 2nd time (Christmas).