Weight loss journey

Sept 22: I gained a half pound! I was trying my best to eat properly but it was very difficult with all the yard work I was trying to get accomplished. I was outdoors most of the day. I think I overate my starches. Well... I guess a little weight gain is better that a lot of weight gain. I'm going to try and drink a lot of water today and it shouldn't be too difficult as I'll be outside most of the day tending to more yard work. When will it end? I'm trying to take advantage of the weather.
Do you think it's possible that the half pound weight gain is actually muscle weight? I wonder....
I was really hoping to be in the 150's by this weekend or, at least, by Monday. I've got one more day so, I can keep my fingers crossed.
Current Weight: 160.5 lbs
Update: Gained 0.5 lb