My official weigh-in is on Monday mornings. I have been weighing every day, but am going to stop doing this soon. I believe weight is not the best way to judge health and fitness. How I feel is first and foremost.
I created a challenge to not weigh for 2 weeks. I stubbornly achieved it and was impressed with the results, but quickly went back to daily weight checks.
The reason I believe daily isn't good for me is that the fluctuations in weight are very misleading and counter to long-term goals. If we are eating well and keeping up with exercise, the results will come.
I work for the Department of Redundancy Department